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SUMMARY:Complex orientations and Tate fixed-points - Kiran Luecke (Univers
 ity of Illinois at Urbana-Champaign)
DTSTART:20250620T091500Z
DTEND:20250620T101500Z
UID:TALK230713@talks.cam.ac.uk
DESCRIPTION:I will present a joint work with Shachar Carmeli dedicated to 
 the construction of E_infty complex orientations for commutative ring spec
 tra obtained from complex oriented ones via S^1 Tate fixed-points. Among o
 ther things\, this construction provides a spectral lift of the total Cher
 n class\, originally constructed by Lawson and Michelson using the theory 
 of algebraic cycles. It also gives E_infty refinements of some well-known 
 complex orientations such as the Jacobi orientation of Ando-French-Ganter.
 \n&nbsp\;
LOCATION:Seminar Room 1\, Newton Institute
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