Let be an odd prime number. We show that there exists a finite group of order for which the mod cycle map from the mod Chow ring of its classifying space to its ordinary mod cohomology is not injective.
"On the cycle map of a finite group." Ann. K-Theory 2 (1) 47 - 72, 2017. https://doi.org/10.2140/akt.2017.2.47