5 citations · 22 across the 23 of their papers we have counts for
12 papers · 1 filter
Invariants of r-spin TQFTs and non-semisimplicity
Nils Carqueville, Ehud Meir, Lorant Szegedy
For a positive integer r, an r-spin topological quantum field theory is a 2-dimensional TQFT with tangential structure given by the r-fold cover of SO_2 . In particular, such a TQF…
Existence of integral Hopf orders in twists of group algebras
Juan Cuadra, Ehud Meir
We find a group-theoretical condition under which a twist of a group algebra, in Movshev's way, admits an integral Hopf order. Let be a (large enough) number field with ring of…
Interpolations of monoidal categories and algebraic structures by invariant theory
Ehud Meir
In a previous work by the author it was shown that every finite dimensional algebraic structure over an algebraically closed field of characteristic zero K gives rise to a characte…
On isotypic decompositions for non-semisimple Hopf algebras
Vincent Koppen, Ehud Meir, Christoph Schweigert
In this paper we study the isotypic decomposition of the regular module of a finite-dimensional Hopf algebra over an algebraically closed field of characteristic zero. For a semisi…
Geometric perspective on Nichols algebras
Ehud Meir
We formulate the generation of finite dimensional pointed Hopf algebras by group-like elements and skew-primitives in geometric terms. This is done through a more general study of…
Non-existence of Hopf orders for a twist of the alternating and symmetric groups
Juan Cuadra, Ehud Meir
We prove the non-existence of Hopf orders over number rings for two families of complex semisimple Hopf algebras. They are constructed as Drinfel'd twists of group algebras for the…