On the Chow group of the self-product of a CM elliptic curve defined over a number field

Kalyan Banerjee, Kalyan Chakraborty

Published 2019-08-18Version 1

In this note we study the cokernel of the restriction map from the Chow group of codimension 2 cycles on the spread of the self product of a CM-elliptic curve over the ring of integers of a number field to the codimension 2 cycles on the self of product of the CM elliptic curve itself. We prove that this cokernel is pro-finite.