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arxiv: 1503.02161 · v2 · pith:CBM5467Znew · submitted 2015-03-07 · 🧮 math.AG

Torsion and divisibility for reciprocity sheaves and 0-cycles with modulus

classification 🧮 math.AG
keywords moduluscyclestheorydivisibilitytorsionvarietieschowgroup
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The notion of modulus is a striking feature of Rosenlicht-Serre's theory of generalized Jacobian varieties of curves. It was carried over to algebraic cycles on general varieties by Bloch-Esnault, Park, R\"ulling, Krishna-Levine. Recently, Kerz-Saito introduced a notion of Chow group of $0$-cycles with modulus in connection with geometric class field theory with wild ramification for varieties over finite fields. We study the non-homotopy invariant part of the Chow group of $0$-cycles with modulus and show their torsion and divisibility properties. Modulus is being brought to sheaf theory by Kahn-Saito-Yamazaki in their attempt to construct a generalization of Voevodsky-Suslin-Friedlander's theory of homotopy invariant presheaves with transfers. We prove parallel results about torsion and divisibility properties for them.

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