Results 41 to 50 of about 1,896 (88)

The Brauer-Manin Obstruction and Sha[2]. [PDF]

, 2007
We discuss the Brauer-Manin obstruction on del Pezzo surfaces of degree 4. We outline a detailed algorithm for computing the obstruction and provide associated programs in magma.
Bright, M.J., Bruin, N., Flynn, E. V., Logan, A.   +3 more
core  

Correlation functions and representation bases in free N=4 Super Yang-Mills

, 2012
We study exact correlation functions of N=4 SYM at zero coupling. It has been known that it is convenient to label local gauge invariant operators by irreducible representations of symmetric groups/Brauer algebras.
Balasubramanian, Beisert, Beisert, Bekker, Berenstein, Bhattacharyya, Bhattacharyya, Brown, Brown, Brown, Carlson, Collins, Corley, Corley, De Comarmond, de Mello Koch, de Mello Koch, de Mello Koch, de Mello Koch, de Mello Koch, de Mello Koch, Grisaru, Haggi-Mani, Halverson, Hashimoto, Ishiki, Kim, Kimura, Kimura, Kimura, Kimura, Kimura, Kimura, Koch, Koch, Koch, Koch, Koch, Koch, Koike, Kristjansen, Kristjansen, Lin, McGreevy, Okuyama, Pasukonis, Polychronakos, Sezgin, Sezgin, Skenderis, Skenderis, Sundborg, Yusuke Kimura   +52 more
core   +1 more source

Explicit height estimates for CM curves of genus 2

Transactions of the London Mathematical Society, Volume 12, Issue 1, December 2025.
Abstract In this paper, we make explicit the constants of Habegger and Pazuki's work from 2017 on bounding the discriminant of cyclic Galois CM fields corresponding to genus 2 curves with CM and potentially good reduction outside a predefined set of primes. We also simplify some of the arguments.
Linda Frey, Samuel Le Fourn, Elisa Lorenzo García   +2 more
wiley   +1 more source

Degrees and prime power order zeros of characters of symmetric and alternating groups

Bulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3408-3428, November 2025.
Abstract We show that the p$p$‐part of the degree of an irreducible character of a symmetric group is completely determined by the set of vanishing elements of p$p$‐power order. As a corollary, we deduce that the set of zeros of prime power order controls the degree of such a character. The same problem is analysed for alternating groups, where we show
Eugenio Giannelli, Stacey Law, Eoghan McDowell   +2 more
wiley   +1 more source

Tubes Containing String Modules in Symmetric Special Multiserial Algebras

, 2020
We provide a method for determining the existence and ranks of tubes in the stable Auslander-Reiten quiver of symmetric special multiserial algebras using only the information from the underlying Brauer configuration.
Duffield, Drew D.
core  

On the order three Brauer classes for cubic surfaces

, 2011
We describe a method to compute the Brauer-Manin obstruction for smooth cubic surfaces over $\bbQ$ such that $\Br(S)/\Br(\bbQ)$ is a 3-group. Our approach is to associate a Brauer class with every ordered triplet of Galois invariant pairs of Steiner ...
Elsenhans, Andreas-Stephan, Jahnel, Jörg   +1 more
core   +1 more source

Growth problems in diagram categories

Bulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3454-3469, November 2025.
Abstract In the semisimple case, we derive (asymptotic) formulas for the growth rate of the number of summands in tensor powers of the generating object in diagram/interpolation categories.
Jonathan Gruber, Daniel Tubbenhauer
wiley   +1 more source

Free particles from Brauer algebras in complex matrix models

, 2010
The gauge invariant degrees of freedom of matrix models based on an N x N complex matrix, with U(N) gauge symmetry, contain hidden free particle structures. These are exhibited using triangular matrix variables via the Schur decomposition.
Kimura, Yusuke, Ramgoolam, Sanjaye, Turton, David   +2 more
core   +1 more source

Units in group rings and blocks of Klein four or dihedral defect

Bulletin of the London Mathematical Society, Volume 57, Issue 11, Page 3470-3489, November 2025.
Abstract We obtain restrictions on units of even order in the integral group ring ZG$\mathbb {Z}G$ of a finite group G$G$ by studying their actions on the reductions modulo 4 of lattices over the 2‐adic group ring Z2G$\mathbb {Z}_2G$. This improves the “lattice method” which considers reductions modulo primes p$p$, but is of limited use for p=2$p=2 ...
Florian Eisele, Leo Margolis
wiley   +1 more source

Jordan correspondence and block distribution of characters

Journal of the London Mathematical Society, Volume 111, Issue 2, February 2025.
Abstract We complete the determination of the ℓ$\ell$‐block distribution of characters for quasi‐simple exceptional groups of Lie type up to some minor ambiguities relating to non‐uniqueness of Jordan decomposition. For this, we first determine the ℓ$\ell$‐block distribution for finite reductive groups whose ambient algebraic group defined in ...
Radha Kessar, Gunter Malle
wiley   +1 more source