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math.KT2026
K_1 of matroids
Thor Wittich
Using the geometric realization spectral sequence and the Serre spectral sequence, we compute , the first K-theory group of the proto-exact category of p…
math.KT2025
Higher Spherical Scissors Congruence I: Hopf Algebra
Inbar Klang, Josefien Kuijper, Cary Malkiewich +2
In the study of the generalization of Hilbert's Third Problem to spherical geometry, Sah constructed a Hopf algebra of spherical polytopes with product given by join and coproduct…