Kyle Ormsby, University of Washington / Reed College

Thursday, October 26, 2023 - 3:30pm to 4:30pm

PDL C-401

We identify the motivic \$KGL/2\$-local sphere as the fiber of \$\psi^3-1\$ on \$(2,\eta)\$-completed Hermitian \(K\)-theory, over any base scheme containing 1/2. This is a motivic analogue of the classical \$K(1)\$-local sphere, and extends to a description of the \$KGL/2\$-localization of any motivic spectrum. Our proof relies on a novel conservativity argument that should be of broad utility in stable motivic homotopy theory. This is joint work with William Balderrama and J.D. Quigley.

*There will also be a pre-talk aimed at graduate students 2:30-3:20pm in PDL C-401.*