Results 11 to 20 of about 359,833 (281)

Interpolation inequalities and spectral estimates for magnetic operators [PDF]

, 2018
We prove magnetic interpolation inequalities and Keller-Lieb-Thir-ring estimates for the principal eigenvalue of magnetic Schr{\"o}dinger operators. We establish explicit upper and lower bounds for the best constants and show by numerical methods that ...
Dolbeault, Jean, Esteban, Maria J., Laptev, Ari, Loss, Michael   +3 more
core   +2 more sources

Remarks on rings of constants of derivations [PDF]

Proceedings of the American Mathematical Society, 1989
Let k k be a field of characteristic p > 0 p > 0 and D ≠ 0 D \ne 0 a family of k k -derivations of k [ x , y ] k[x,y] . We prove that k [
openaire   +1 more source

The fusion algebra of bimodule categories [PDF]

, 2007
We establish an algebra-isomorphism between the complexified Grothendieck ring F of certain bimodule categories over a modular tensor category and the endomorphism algebra of appropriate morphism spaces of those bimodule categories.
A. Joyal, A.A. Kirillov, C. Kassel, C. Schweigert, Christoph Schweigert, D.E. Evans, F. Xu, Ingo Runkel, J. Böckenhauer, J. Böckenhauer, J. Böckenhauer, J. Fjelstad, J. Fröhlich, J. Fröhlich, J. Fuchs, J. Fuchs, J. Lepowsky, Jürgen Fuchs, M. Izumi, M. Müger, M. Müger, P. Francesco di, P.I. Etingof, R. Longo, R. Longo, S. Majid, T. Gannon, V. Ostrik, V.B. Petkova, V.B. Petkova, V.G. Turaev   +30 more
core   +1 more source

The puzzle conjecture for the cohomology of two-step flag manifolds [PDF]

, 2016
We prove a conjecture of Knutson asserting that the Schubert structure constants of the cohomology ring of a two-step flag variety are equal to the number of puzzles with specified border labels that can be created using a list of eight puzzle pieces. As
Buch, Anders Skovsted, Kresch, Andrew, Purbhoo, Kevin, Tamvakis, Harry   +3 more
core   +1 more source

Polynomial derivations and their rings of constants

, 1994
Andrzej Nowicki
openalex   +2 more sources

Rings of Constants of the Formk[f] [PDF]

Communications in Algebra, 2006
Let k[X] be the algebra of polynomials in n variables over a field k of characteristic zero, and let f ∊ k[X]∖ k. We present a construction of a derivation d of k[X] whose ring of constants is equal to the integral closure of k[f] in k[X]. A similar construction for fields of rational functions is also given.
Essen, A.R.P. van den, Ollagnier, J.M., Nowicki, A.   +2 more
openaire   +2 more sources

Branching rules in the ring of superclass functions of unipotent upper-triangular matrices [PDF]

, 2008
It is becoming increasingly clear that the supercharacter theory of the finite group of unipotent upper-triangular matrices has a rich combinatorial structure built on set-partitions that is analogous to the partition combinatorics of the classical ...
Thiem, Nathaniel
core   +5 more sources

Constants are Definable in Rings of Analytic Functions [PDF]

Proceedings of the American Mathematical Society, 1994
The analytic functions defined in a fixed domain form a ring with pointwise addition and multiplication. We describe a way to define constants in the ring using a first-order formula which is independent of the domain.
openaire   +1 more source

Regulator constants of integral representations of finite groups [PDF]

, 2018
Let G be a finite group and p be a prime. We investigate isomorphism invariants of $\mathbb{Z}_{p}[G]$-lattices whose extension of scalars to $\mathbb{Q}_p$ is self-dual, called regulator constants.
Torzewski, Alex
core   +2 more sources

Constants of Algebraic Derivations in Prime Rings

Communications in Algebra, 2008
Let R be a prime ring with extended centroid F and δ an F-algebraic derivation of R with the associated inner derivation ad(b). Set , the subring of constants of δ in R. We characterize the primeness and semiprimeness of R (δ) by the minimal polynomial μ(λ) of b over F.
Chuang, C.-L, Lee, T.-K, Zhou, Y.
openaire   +2 more sources