Frequently Asked Questions

1. How do I stop these spam bounce messages?
2. How do I print a text file?
3. How do I print on transparencies?
4. How do I log out?
5. How do I edit a file?
6. How do I connect to the MUSes from outside the Math Department?
7. How do I run mathematica jobs in the background?
8. I get a security warning when I try to connect to ssh.math.uiuc.edu. What should I do?
9. How can I copy files between the MUSes and my pc or mac?
10. I cannot get ftp to transfer files to/from remote sites. What can I do?
11. How do I set up Outlook Express, Eudora, or a similar e-mail client at home to receive e-mail from my Math account?
12. How do I view and print a postscript(ps) file?
13. My postscript file won't print. What can I try?
14. How do I view and print a pdf file?
15. What can I do about acroread and X windows crashing when I view a pdf file?
16. How do I view and print a TeX(dvi) file?
17. How do I view and print a Word(doc) file?
18. How do I change my ph (electronic phonebook) information?
19. How do I use TeX?
20. How can I set up russian fonts?
21. How can I get my desktop settings back?
22. Where can I find software licensed to the university?
23. What software is currently installed on the MUSes?
24. How do I set up a web page?
25. Why does my web page look bad?
26. I'm new to unix. Where do I start?
27. What can I do about spam?
28. How do I change my password?
29. I got stuck in some program. How do I get out?
30. What do I need to do to get an account for a visitor?
31. How can I see how much disk space I am using?
32. How can I compress my files for storage?
33. What if there isn't enough space?
34. How can I run a program at low priority?
35. How do I register for classes?
36. How do I get traceroute to ssh.math.uiuc.edu to work?
37. Are there other places on campus that I have access to computer facilities?
38. I would like to report a problem with one of the MUSes. What should I know?
39. I have a question that isn't answered on this page. Are there any additional resources that you could recommend?

1. How do I stop these spam bounce messages?

...my e-mail has been flooded with undeliverable or
 blocked e-mail that I have not sent...

>Quite suddenly I'm receiving very large amounts of spam everyday. Has
>something happened to our spam filter?

...I am also being severely pelted with
message failure emails...

If these questions sound familiar then please read this page: CITES: Information on Email Backscatter

Or perhaps this page: 100 e-mail bouncebacks? You've been backscattered.

2. How do I print a text file?

To print a text document named doc1.txt to the printer named ch001:

        lpr -Pch001 doc1.txt

To print on one side of the page only:

        lpr -Pch001nd doc1.txt

If you want to print to a printer other than ch001, replace ch001 by the name of the other printer. The publicly available printers are:

ah130	Altgeld Hall room 130 (duplex)
ch001	Coble Hall room 001 (duplex)
ch002	Coble Hall room 002
ih225a	Illini Hall room 225
ih323	Illini Hall room 323
ih344	Illini Hall room 344

If you have a personal printer, it is named with your username. For example, if user cranston had a personal printer, he would print with the command:

        lpr -Pcranston doc1.txt

3. How do I print on transparencies?

The printer in AH130 will accept printing to transparencies. Make sure that the transparencies are usable for laser printers. Photocopier transparencies are too thin and could melt inside the printer.

Also make sure that you are using the proper printing queue. Submitting a job to ah130 will print double-sided. Something you don't want. So submit the job to ah130nd, which is single-sided only.

You should bring the package of transparencies you want to use to the MUSes Staff. So that we can okay it's use in our printers.

4. How do I log out?

To end your session, you can click on the exit icon on the toolbar at the bottom of the screen. A dialog box will ask you if you are sure you want to log out. Choose Yes.

Occassionally, this will not work. In this case, open a terminal. This can be done by clicking on the background, then choosing Tools -> Terminal. In the terminal window, type:

kill -9 -1

This will end your session. Before you do this, please e-mail to help, describing the problem.

5. How do I edit a file?

The three most common unix text editors are pico, vi, and emacs. The easiest of these to use is pico. To edit file.txt using pico, type:

pico file.txt

Once pico starts up, you can simply begin typing. There are always menus at the bottom of the screen. To save the file, hold down the control key, and hit the X key. To exit, hold down the control key, and hit the O key. Vi and emacs are considerably more complicated, but also have many more useful capabilities. Click on the links to learn about vi or emacs.

6. How do I connect to the MUSes from outside the Math Department?

The MUSes no longer support telnet. If you want to connect from outside the Math Department, you need to use Secure Shell (ssh) to the machine ssh.math.uiuc.edu. There are two ways you can do this. If you will frequently be connecting from the same machine, you can download an ssh client. This is a piece of software that you install on the computer you are connecting from. The interface looks very similar to telnet. You can download an ssh client here.

If you will frequently be connecting from different machines or if you are unable to download an ssh client to the computer from which you wish to connect, you can use a java version of ssh, which is available here, called mindterm. This version of mindterm currently works with Netscape, Mozilla, and seems to work well with IE. However, on slower computers it might take more time for the mindterm window to pop up.

7. How do I run Mathematica jobs in the background?

Mathematica comes with a program called "math," located in /usr/local/bin. The 'math' program inputs from stdin and writes to stdout. Thus, given a Mathematica input file called, for example, 'input.math', running
% math < input.math > output.math &
Will run the process in the background and output everything to a file called 'output.math'. For more info about the 'math' program see 'man math.1'.

8. I get a security warning when I try to connect to ssh.math.uiuc.edu. What should I do?

You will encounter this message if the host key (information to identify the remote host) is not what the SSH client is expecting. If you know that the host key has changed since you last logged in, which is the case with our recent system upgrade, you can do the following:

UNIX/Linux/Mac OS X

If you use text-based terminal on UNIX/Linux/Mac OS X, you should see the message like:

@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@    WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!     @
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
IT IS POSSIBLE THAT SOMEONE IS DOING SOMETHING NASTY!
Someone could be eavesdropping on you right now (man-in-the-middle attack)!
It is also possible that the RSA1 host key has just been changed.
The fingerprint for the RSA1 key sent by the remote host is
75:71:10:85:9b:78:b1:fd:9f:98:57:4f:63:04:ef:55.
Please contact your system administrator.
Add correct host key in /export/home/user/.ssh/known_hosts to get rid of this message.
Offending key in /export/home/user/.ssh/known_hosts:3
RSA1 host key for ssh.math.uiuc.edu has changed and you have requested strict checking.
Host key verification failed.

Notice the line starting with "Offending key in". You should delete the specified line (in the above example, 3) in the specified file (in the above example, /export/home/user/.ssh/known_hosts) and try again. Note that the file you need to edit may be ~/.ssh/known_hosts2, if your client uses SSH protocol version 2.

Windows

If you use PuTTY, you should get a dialog box to warn you.

Simply click on the "Yes" button. "No" will let you carry on without saving the host key; when you attempt to connect the next time, you will see the same dialog box. Alternately, you can edit certain registry node, but that's not for the faint of heart.

If you use Secure Shell Client (version 3.1), a similar dialog box appears.

Click on the "Yes" button. Then you will be presented with another dialog box. Read it, and choose "Yes".

Older versions of Secure Shell Client may present a differnt dialog box. In this case, you can delete the old host key in the Settings dialog box (Global Settings -> Host Keys).

Macintosh

If you use NiftyTelnet, the dialog box presents choices similar to PuTTY's.

The left two will get you to the normal prompt. The leftmost one will save (overwrite the existing) host key. You should click on either of the left two. Alternately, you can edit the file System Folder:Preferences:NiftyTelnet SSH Known Hosts.

If your SSH client is not listed here, please contact help.

It is important to note that if you are not sure if the remote host changed its host key, it may be a sign of possible compromise. Contact the remote host's system administrator.

9. How can I copy files between the MUSes and my pc or mac?

To copy files between the MUSes and your pc or mac, you first need to download and install an ssh client (see earlier faq item). Once you have downloaded and installed an ssh client, you can use the scp and/or the sftp client that was included with it. Most of the clients have a user-friendly graphical user interface (GUI). If you are using NiftyTelnet on a mac, follow our instructions below.

Copying files between the MUSes and a mac.

10. I cannot get ftp to transfer files to/from remote sites. What can I do?

We do not allow inbound FTP connections; that is, you cannot be logged on to a remote system and issue commands such as

	ftp ssh.math.uiuc.edu

and expect it to work. FTP traffic is allowed only for connections originating from our systems.

Our recent system upgrade was accompanied by firewall installation. In order to allow FTP connections through firewalls, the FTP client must be in so-called passive mode. The ftp program native to Solaris 8 unfortunately does not support this feature. We have installed an alternative called ncftp. It is mostly backward compatible with the old ftp commands and has a few enhancements, such as bookmarks. Click on the ncftp link above for more information.

11. How do I set up Outlook Express, Eudora, or a similar e-mail client at home to receive e-mail from my Math account?

You will need to configure two things: You incoming mail settings and your outgoing mail settings. Incoming mail settings will be the same for everyone, and specify the Math department's mail server. Outgoing mail settings are specific to the manner in which you connect to the Internet.

For incoming mail, your POP3 server will be mail.math.uiuc.edu. You must use secure authentication for the POP3 connection (sometimes called POP3s). In Outlook Express, the Account Properties window has "Advanced" tab. There, click on "This server requires a secure connection (SSL)" checkbox. Some clients may need to have alternate port (port 995) enabled for the SSL connection to work. Outlook and Eudora have similar configuration options for secure e-mail connections.

On PC-Pine, you can specify inbox-path={mail.math.uiuc.edu/pop3/user=jdoe/ssl}INBOX in your pinerc to access your inbox over SSL (adjust jdoe to your login name).

For outgoing mail settings, the outgoing mail (SMTP) server should be set to the server specified by your Internet service provider (ISP). If you use CITES dialup access, configuration instructions for your desktop e-mail program can be found here. If you have connectivity through Insight Communications (cable modem), instructions can be found here. If you have connectivity through SBC/Yahoo! (DSL), instructions can be found here.

12. How do I view and print a postscript(ps) file?

To simply print a file named file1.ps to the printer named ch001 use the command:

 lpr -Pch001 file.ps

To view a postscript file use ghostview. Type the command:

gv file.ps

You may also print the file while you are viewing it in ghostview. To do this, click on the Print All button on the lefthand side, then click the Print button. In addition, you can print selected pages by marking them (right-click on the page number in the page list on the lefthand side) then clicking on the Print Marked button.

13. My postscript file won't print. What can I try?

The most common cause of printing problems with postscript files is trying to print a level 3 postscript file on a printer which does not support level 3 postscript. Currently, the printer in Altgeld Hall room 130 does not support level 3 postscript. Frequently, such a problem can fixed by converting from a level 3 postscript file to a level 2 postscript file. If you have a level 3 postscript file called file1.ps and want to convert it to a level 2 postscript file, called file2.ps, type:

ps2ps file1.ps file2.ps

Then you can print file2.ps normally.

14. How do I view and print a pdf file?

To view a pdf file, type:

acroread file.pdf

To print a pdf file, first view it, using acroread. Then from the File menu, select Print... and click the OK button.
If you would like to print a pdf file, without taking the time to load acroread's user interface, you can add the following line to your .cshrc file.

alias   lpdf    'acroread -toPostScript < \!^ | lpr'

Then to print example.pdf, simply type:

lpdf example.pdf

Another option for printing a pdf file is to convert it to a postscript file then print the postscript file directly:

pdf2ps infile.pdf output.ps

lpr -Pah130 output.ps

15. What can I do about acroread and X windows crashing when I view a pdf file?

If acroread and X windows crash when you view a pdf file, try using xpdf instead. You may need to tell your web browser (netscape and/or mozilla) to use xpdf instead of acroread.

16. How do I view and print a TeX(dvi) file?

TeX files are actually plain text files, with a .tex extension. To turn file.tex into something you can view, type the command:

latex file.tex (or tex file.tex)

This will generate a file named file.dvi. Once you have a dvi file, you will probably want to view it. To do this, type:

xdvi file.dvi

You may also want to print it. To do this, type:

dvips -Pch001 file.dvi

To print selected pages (say pages 2 and 3), you can use the command:

dvips -pp2,3 -Pch001 file.dvi

17. How do I view and print a Word(doc) file?

To view or print a Word document, you need to open it in StarOffice. If you have never used StarOffice before, you need to first install it. To do this, type the following, at a command line:

/usr/local/office52/program/setup

This will begin an install program. Read the directions, and after you make each selection, click the next button. If you are unsure about what you should choose for a selection, the default is almost always fine. When the install program has finished, it will add an icon to the bar at the bottom of your screen. In order for this to take effect, you may need to log out and log back in. After you have done this, you should be able to star StarOffice by clicking the new icon at the left end of the bar at the bottom of your screen. Be patient. StarOffice often takes a long time to start up. In the top left corner of your screen you should now see a File menu. From the File menu, choose Open, and select your file. Ideally, now you should be able to print it by selecting Print from the File menu. However, you may need to add a printer. If this is the case, please read the next question: How do I install a new printer for StarOffice?

18. How do I change my ph (electronic phonebook) information?

The easiest way to do this is via the web, at https://www-s.uiuc.edu/ede/.

19. How do I use TeX?

    The TeX help group has prepared a set of very useful web pages about how to use TeX and LaTeX.
    If you have further questions, you can e-mail them.

20. How can I set up russian fonts?

    Check our russification page.

21. How can I get my desktop settings back?

When I log in, everything looks very different from normal. How can I get things back to the way they were?

Most likely, you are running Open Windows, rather than Common Desktop Environment. To fix this, log out. Before you log back in, under the 'Options' menu, click on 'Session' and 'Common Desktop Environment' rather than the default 'User's last desktop'.

22. Where can I find software licensed to the university?

    The Software WebCenter coordinates the licenced software for the University of Illinois.

23. What software is currently installed on the MUSes?

You can view an alphabetical listing of all the software currently installed, here.
If you are interested in the version numbers for the software, as well, click here.

24. How do I set up a web page?

You may contact the webmaster for assistance or to have your page linked from the departmental pages.

First you must have world execute permissions on your home directory. To check that type

ls -ld ~

It should return

drwx--x--x 105 your-username  your-group  10752 Nov 16 01:56 your-home-directory

If it doesn't show that, set the permissions correctly by typing

chmod a+x ~

Now to set up your web page. In a terminal window, go to your home directory:

cd

Create a new directory, called public_html. To do this, type:

mkdir public_html

In order for other people to see your web page, you need to change the permissions of the new directory. By default, when you create a directory (or a file) you are the only one who can look at it or change it. To allow other people to view the contents of the public_html directory, type:

chmod 755 public_html

Now, we need to actually create the your web page. First move into your public_html directory:

cd public_html

Now you need to create a file called index.html. To do this, you can use any unix text editor, or you can upload your index.html file from another computer. We will create a sample index.html using pico, a very simple unix text editor. Type:

pico index.html

Once you are using pico, enter the following:

<html>
<head>
<title>
My First Webpage
</title>
</head>
<body>
<center>
<h1>
My First Webpage
</h1>
</center>
This is my first web page. Isn't it beautiful?
</body>
</html>

Now to save the file and exit, hold down the control key, and hit the X key. Then hold down the control key, and hit the O key.

Finally, you need to change the permissions on the file index.html so that other people can look at it (before we only changed the permissions on the public_html directory). To do this, type:

chmod 644 index.html

Now you should be able to look at your web page through a web browser. Start up netscape. If your username was cranston, in the url box, you would type http://www.math.uiuc.edu/~cranston.

25. Why does my web page look bad?

One possibility is that you have committed a syntax error in writing the HTML code. In the face of a syntax error, the behavior of browsers is unspecified by standards. Netscape, for example, will not display a table unless the close table tag is present. To check the syntax of your web page, go to http://validator.w3.org and enter the URL, also called a URI. If your web page doesn't specify, it will ask you for the version number of the HTML standard you want to adhere to. You might pick something like 3.2, 4.01 Transitional, or 4.01 Strict. It may also ask you for the character encoding used. A standard default would be us-ascii.

26. I'm new to unix. Where do I start?

Here is an introduction to unix, which you may find useful.
We also have a copy of the book Learning the UNIX Operating System, which is available for use in room 130 of Altgeld Hall. For a list of other available reference books, see the end of this FAQ.

27. What can I do about spam?

    To learn more about CITES Spam Control please click on this link.

28. How do I change my password?

To change your password, enter the following command:

passwd

You will be asked for your current password once, and then for the new password twice. Here is a sample session where the user fiske changes his password:

u07 11% passwd
passwd:  Changing password for fiske
Enter login(NIS) password: 
New password:
Re-enter new password:
NIS passwd/attributes changed on charisma.math.uiuc.edu

In response to each prompt you will type the appropriate password, but these will not be displayed as you type.

Users must select passwords which are difficult to crack. A good password should not be a plain word or name, not in any language. It should be more complicated than a simple change like adding a number, capitalising, or reversing. Examples of bad passwords are Hanna, earth2, retupmoc (computer reversed). The passwd program will reject passwords that it considers to be bad. Pay close attention after you give a new password to be sure it was accepted.

A good password should be trickier than a simple algorithm and should contain upper and lower case alphabetic characters mixed in with numeric and punctuation characters. For example, you could put two words together in a strange way ("Eric Jody" -> "Eri-Jod"), take the first letter of every word in a sentence (I hate using these bloody computers. -> "Ihutbc." Note the period is part of the password.). Passwords should be 6 - 8 characters long.

We make a practice of running a password guessing program. If it gets your password, your account will be locked until you can contact our system administrators to reset it.

29. I got stuck in a program. How do I get out?

If you get trapped in a program and cannot seem to escape, try the folowing keys in the order listed:

• Ctrl-C (interrupt)
• Ctrl-D (logout/eof)
• Ctrl-G (quit)
• Ctrl-Z (suspend process)
• Ctrl-\ (quit on some systems)

You can get out of vi by typing
:q![enter]

You can get out of emacs, by typing
Ctrl-G (to stop any processing that might be going on)
Ctrl-x Ctrl-c

30. What do I need to do to get an account for a visitor?

In order to request an acount for a visitor, please send mail to help with the following information:

desired login
full name
contact phone number to give password (we do NOT e-mail passwords)
termination date


31. How can I see how much disk space I am using?

To see how much disk space you are using, you should use the du command. The simplest version of this command is:

    cd; du -k

which changes to your home directory, then recursively shows how many kilobytes each file and directory are using. You may also find the following command useful:

    cd; du -ks `ls -A` | sort -rn | more

This does much the same thing, but is not recursive, and sorts the results in order of what is using the most space.

Finally, each user is grouped with other users into a partition. That partition has an allotted amount of space. When the space is used up, none of the users can create or edit files until some of the space becomes free again. For example:

    u00 20% cd; pwd
    /home/13/cranston

user cranston is in the partition /home/13. To see how much space is available on each partition, use the df command:

     u00 21% df -k ~
     Filesystem            kbytes    used   avail capacity  Mounted on
     charisma:/home/13    2078726 1801261   69593    97%    /home/13

You should see something like above. In the case of cranston, he sees that /home/13 still has 91254 kilobytes (about 91 megabytes) free.

32. How can I compress my files for storage?

    You can keep files around in a smaller size by compressing individual files using the gzip command. You can use the tar command to package up an entire directory into a single file, which can then be compressed.

    To compress a single file, say thesis.ps, you can use the gzip command, like this:

      gzip thesis.ps
    

    This turns thesis.ps into thesis.ps.gz, which is typically much smaller. To reverse the process and get thesis.ps back, use the gunzip command, like this:

      gunzip thesis.ps.gz
    

    Good candidates for compression include postscript files (.ps files), Mathematica notebooks (.nb files), and files with lots of English text, such as old mail files.

    Suppose you have many files that you want to compress, and that they are all in one directory, say OldStuff. You can package the directory into an archive file by typing something like this:

      tar cvfp OldStuff.tar OldStuff
    

    where OldStuff.tar is the name of the archive file.

    When this is done you should compress the .tar file using gzip as follows:

     

      gzip OldStuff.tar
    

    which will turn OldStuff.tar into OldStuff.tar.gz

    This should greatly reduce the size of the files. However, at this point the files you just compressed will still be taking up space in their original, uncompressed form. You will need to delete them to reduce your disk usage. In this example, the command

      rm -r OldStuff
    

    should do the job, by recursively deleting the OldStuff directory.

    Later, when you need to use the contents of the OldStuff directory, you can reverse the process as follows:

      gunzip OldStuff.tar.gz
      tar xvfp OldStuff.tar
    

    and your OldStuff directory will be restored. At this point, to avoid wasting space, don't forget to delete the archive file, OldStuff.tar.

33. What if there isn't enough space?

If there isn't enough space for both the files you are compressing, and also a compressed copy of them, you can do the following:

  tar cvfp /tmp/OldStuff.tar OldStuff

This creates OldStuff.tar in the /tmp directory, which generally has more than enough free space. Before you delete your files, you should make sure that the tar archive that you created, actually does contain the files. To do this, you can print the table of contents of the tar archive:

  tar tf /tmp/OldStuff.tar

You should see a list of all of the files in the tar archive. Now you can gzip the tar archive, remove the uncompressed copies of your files, and move OldStuff.tar.gz into your home directory:

  gzip OldStuff.tar
  rm -r ~/OldStuff
  cp /tmp/OldStuff.tar.gz ~

34. How can I run a program at low priority?

To change the priority of a program, you should use the commands nice and renice. For example, to run netscape at low priority, type:

nice -19 netscape

On the other hand, if netscape is already running, and you want to lower its priority, type:

ps -ef | grep netscape

This will return something like:

cranston 12513 12359  0 13:31:21 pts/6    0:00 /bin/csh -f /usr/local/bin/netscape
cranston 12514 12513  0 13:31:21 pts/6    0:02 /usr/local/encap/netscape-4.75/bin/netscape

The first number in each line is the process number. The second number is the number of the process in charge of that process. So we see that 12513 is in charge of 12514, and is thus the head netscape process. This is the process whose priority we want to change. We do this by typing:

renice -19 12513

35. How do I register for classes?

Class registration has changed starting in Fall 2004. To register for courses, go here. On the first page, click on "Student & Faculty Self-Service", then click on UIUC. You will be asked for your EnterpriseID and password, which are DIFFERENT from your NetID. There is an option on this page to reset your enterprise ID password if you do not know what it is. Once you have logged in, you can register for classes through the Registration & Records/Registration application.

36. How do I get traceroute to ssh.math.uiuc.edu work?

Ssh.math.uiuc.edu allows traceroute icmp connections but not udp connections. Some traceroute programs default to using udp. Check your man page or other documentation to find the option for telling traceroute to use icmp.

37. Are there other places on campus that I have access to computer facilities?

All University students and staff eligible to use the Instructional Computing Sites, maintained by the Campus Information Technologies and Educational Services.

38. How can I enable java for mozilla under Linux

Make sure that all copies of mozilla are closed. Run "javafix" in a terminal window. After this, open mozilla and enjoy your new java functionality.

39. I would like to report a problem with one of the MUSes. What should I know?

If there is ever a problem with any of the computers or printers, please report the problem immediately. If no one reports the problem, no one will fix the problem.

If possible, report problems by e-mail. Descriptions of all problems including software problems, hardware, network and user account problems should be mailed to help@math.uiuc.edu.

When you mail help@math.uiuc.edu, you will receive an automated response from the problem-tracking system. It will contain a line in the Subject field like: [Math #10] Your problem description.

You should always keep that line in the subject of e-mail you send to help@math.uiuc.edu, regarding your problem. This system will help us better keep track of problems and hopefully make responses quicker.

40. I have a question that isn't answered on this page. Are there any additional resources that you could recommend?

The Math Department has a number of reference books available. Most of them are in Altgeld Hall rooms 129 and 130. This list includes:
• A Guide to LaTeX. Kopka & Daly.
• The Joy of Tex. Spivak.
• Math into LaTex. Grätzer.
• The Mathematica Book. Wolfram.
• Unix for the Impatient. Abrahams & Larson.
• SSH The Secure Shell^*. Barrett & Silverman.
• Using csh & tcsh^*. DuBois.
• Learning the Unix Operating System^*. Peek, Todino, & Strang.
• Unix in a Nutshell^*. Robbins.
• The TeXbook. Knuth.
• The LaTeX Graphics Companion. Goossens, Rahtz, & Mittlebach.
• Programming Perl^*. Wall, Christiansen, & Orwant.
  * These books are published by O'Reilly and are generally quite good. The O'Reilly books are available online for UIUC.

Other points of reference include:
• Campus Information Technologies and Educational Services (CITES) [Campus support for computer services including downloadable software]
• CCSO's Computer Information From Around The World (an excellent resource)
• UIUC TimeTable
• University of Illinois Hompage
• UIUC Library Gateway (on-line library resources, search for articles, reference tools, etc.)
• Department of Mathematics Library
• The On-Line Dictionary of Computing
• The American Mathematical Society (AMS)
• AMS's MathSciNet (on-line mathematical reviews)
• Meet with a consultant.

Last modified August 13, 2004.