### Gersten's conjecture for commutative discrete valuation rings, by Satoshi Mochizuki

The purpose of this article is to prove that Gersten's conjecture for a
commutative discrete valuation ring is true. Combining the result of [GL87], we
learn that Gersten's conjecture is true if the ring is a commutative regular
local, smooth over a commutative discrete valuation ring.

In new version, we will correct several mistakes in the ornginal one.
Especially, we will give the new proof of the retraction theorem (Theorem
3.13).

Satoshi Mochizuki <mochi@ms.u-tokyo.ac.jp>