Year: 2026
Type: preprint
Abstract: Antonini, Azzali and Skandalis proved that, for every countable discrete group $Γ$, the canonical map $EΓ\to\underline{E}Γ$ induces a split injection in equivariant $KK$-theory with real coefficients. In this paper, we give a more elementary proof of the corresponding rational injectivity result in ordinary equivariant $KK$-theory without using $\mathrm{II}_1$ factors.
Source: arXiv (Cornell University)
Authors: Luo, Denghui, Tian, Geng
Institutions: Liaoning University, Jilin University
Language: English
Subfield: Mathematical Physics
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
Award: G8468464243
OpenAlex ID: W7223293450