Department of Mathematics
University of Illinois at Urbana-Champaign
1409 W. Green Street (MC-382)
Urbana, IL 61801-2975
Office: 346 Illini Hall
Phone: (217) 333-6328
Fax: (217) 333-9576
Email: nkoh@uiuc.edu
Quasiconformal mappings, quasidisks, geometric function theory, geometric measure theory, value distribution theory, complex dynamics.
Click on the following images to view the 3D shadows of some rotating 4D surfaces. You'll need the free DPGraph Viewer to see the animations.
Pictures of a Pacific Northwest journey (High speed connection required - if you've a slow connection, you may view the pictures here)