Vol. 9, No. 10, 2015

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On 0-cycles with modulus

Amalendu Krishna

Vol. 9 (2015), No. 10, 2397–2415

Given a nonsingular surface X over a field and an effective Cartier divisor D, we provide an exact sequence connecting CH0(X,D) and the relative K-group K0(X,D). We use this exact sequence to answer a question of Kerz and Saito whenever X is a resolution of singularities of a normal surface. This exact sequence and two vanishing theorems are used to show that the localization sequence for ordinary Chow groups does not extend to Chow groups with modulus. This in turn shows that the additive Chow groups of 0-cycles on smooth projective schemes cannot always be represented as reciprocity functors.

algebraic cycles, modulus condition, $K$-theory
Mathematical Subject Classification 2010
Primary: 14C25
Secondary: 14F30, 14G40
Received: 2 June 2015
Revised: 16 September 2015
Accepted: 9 November 2015
Published: 16 December 2015
Amalendu Krishna
School of Mathematics
Tata Institute of Fundamental Research
1 Homi Bhabha Road, Colaba
Mumbai 400005