Higher central charges and Witt groups
Sign Up to like & getrecommendations! Published in 2022 at "Advances in Mathematics"
DOI: 10.1016/j.aim.2022.108388
Abstract: In this paper, we introduce the definitions of signatures of braided fusion categories, which are proved to be invariants of their Witt equivalence classes. These signature assignments define group homomorphisms on the Witt group. The… read more here.
Keywords: central charges; charges witt; witt group; higher central ... See more keywords
Arason's filtration of the Witt group of dyadic valued fields
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Algebra"
DOI: 10.1016/j.jalgebra.2018.10.026
Abstract: Abstract Generalizing a theorem of Springer, we construct an extended Arason filtration by subgroups for the Witt group of quadratic forms of a general valued field, relating these subgroups with Witt-like groups of the residue… read more here.
Keywords: arason filtration; filtration; filtration witt; witt group ... See more keywords