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比利时vs摩洛哥足彩
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比利时vs摩洛哥足彩
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university of california san diego
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math 211a: seminar in algebra
dr. aryaman maithani
university of utah
polynomial invariants of ${\rm gl}_2$: conjugation over finite fields
abstract:
consider the conjugation action of \({\rm gl}_2(k)\) on the polynomial ring \(k[x_{2\times 2}]\). when \(k\) is an infinite field, the ring of invariants is a polynomial ring generated by the trace and the determinant. we describe the ring of invariants when \(k\) is a finite field, and show that it is a hypersurface.
hosts: karthik ganapathy and steven sam
february 24, 2025
3:00 pm
apm 7321
research areas
algebra****************************
