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We show that the subgroup lattice of any finite group satisfies Frankl's Union-Closed Conjecture. We show the same for all lattices with a modular coatom, a family which includes all supersolvable and dually semimodular lattices. A common…

Combinatorics · Mathematics 2020-07-08 Alireza Abdollahi , Russ Woodroofe , Gjergji Zaimi

A p-compact group, as defined by Dwyer and Wilkerson, is a purely homotopically defined p-local analog of a compact Lie group. It has long been the hope, and later the conjecture, that these objects should have a classification similar to…

Algebraic Topology · Mathematics 2008-04-19 Kasper K. S. Andersen , Jesper Grodal , Jesper M. Møller , Antonio Viruel

We give a classification of irreducible admissible modulo $p$ representations of a split $p$-adic reductive group in terms of supersingular representations. This is a generalization of a theorem of Herzig.

Representation Theory · Mathematics 2019-02-20 Noriyuki Abe

In the representation theory of finite groups, there is a well-known and important conjecture due to M. Brou\'e. He conjectures that, for any prime p, if a p-block A of a finite group G has an abelian defect group P, then A and its Brauer…

Representation Theory · Mathematics 2015-03-17 Shigeo Koshitani , Jürgen Müller , Felix Noeske

Let G be the unramified unitary group in three variables defined over a p-adic field F of odd resudual characteristic. Gelbart, Piatetski-Shapiro and Baruch attached zeta integrals of Rankin-Selberg type to irreducible generic…

Number Theory · Mathematics 2011-11-10 Michitaka Miyauchi

We verify the local analogue of Jiang's conjecture for the upper bound of the geometric wavefront sets of Arthur type representations of split classical $p$-adic groups with $p\gg 0$, under a certain condition. As a consequence, we also…

Representation Theory · Mathematics 2026-03-05 Hiraku Atobe , Dan Ciubotaru

Under endoscopic assumptions about $L$-packets of unitary groups, we prove the local Gan-Gross-Prasad conjecture for tempered representations of unitary groups over $p$-adic fields. Roughly, this conjecture says that branching laws for…

Representation Theory · Mathematics 2015-07-29 Raphaël Beuzart-Plessis

In 2021, Navarro and Tiep proposed a conjecture on character fields of finite quasi-simple groups. We develop some theory on sums of roots of unity and use this theory to prove the conjecture for some infinite families of finite…

Group Theory · Mathematics 2025-01-15 Marco Albert

Lapid and Mao formulated a conjecture on an explicit formula of Whittaker Fourier coefficients of automorphic forms on quasi-split classical groups and metaplectic groups as an analogue of Ichino-Ikeda conjecture. They also showed that this…

Number Theory · Mathematics 2019-02-14 Kazuki Morimoto

We prove the Fargues-Rapoport conjecture for p-adic period domains: for a reductive group G over a p-adic field and a minuscule cocharacter {\mu} of G, the weakly admissible locus coincides with the admissible one if and only if the…

Algebraic Geometry · Mathematics 2017-10-20 Miaofen Chen , Laurent Fargues , Xu Shen

We prove irreducibility and mutual inequivalence for certain unitary representations of R. Thompson's groups F and T.

Operator Algebras · Mathematics 2019-06-25 Vaughan F. R. Jones

We prove the A-theoretic Farrell-Jones Conjecture for virtually solvable groups. As a corollary, we obtain that the conjecture holds for S-arithmetic groups and lattices in almost connected Lie groups.

K-Theory and Homology · Mathematics 2018-09-28 Daniel Kasprowski , Mark Ullmann , Christian Wegner , Christoph Winges

We introduce an infinite-dimensional $p$-adic affine group and construct its irreducible unitary representation. Our approach follows the one used by Vershik, Gelfand and Graev for the diffeomorphism group, but with modifications made…

Representation Theory · Mathematics 2020-05-08 Anatoly N. Kochubei , Yuri Kondratiev

In the case of p-adic general linear groups, each irreducible representation is parabolically induced by a tensor product of irreducible representations supported by cuspidal lines. One gets in this way a parameterization of the irreducible…

Representation Theory · Mathematics 2020-10-30 Marko Tadic

The Peterson-Thom conjecture asserts that any diffuse, amenable subalgebra of a free group factor is contained in a unique maximal amenable subalgebra. This conjecture is motivated by related results in Popa's deformation/rigidity theory…

Operator Algebras · Mathematics 2022-03-15 Ben Hayes

In this paper, we employ a version of Stepanov's method, developed by Hanson and Petridis, to prove several results on additive irreducibility of multiplicative subgroups in finite fields of prime order $p$. Specifically, we show that if a…

Number Theory · Mathematics 2025-05-29 Alexander Kalmynin

We formulate a conjectural p-adic analogue of Borel's theorem relating regulators for higher K-groups of number fields to special values of the corresponding zeta-functions, using syntomic regulators and p-adic L-functions. We also…

K-Theory and Homology · Mathematics 2007-11-19 Amnon Besser , Paul Buckingham , Rob de Jeu , Xavier-Francois Roblot

For a classical group over a non-archimedean local field of odd residual characteristic p, we construct all cuspidal representations over an arbitrary algebraically closed field of characteristic different from p, as representations induced…

Representation Theory · Mathematics 2015-11-30 Robert Kurinczuk , Shaun Stevens

Let $L/K$ be a Galois extension of number fields and let $G=\mathrm{Gal}(L/K)$. We show that under certain hypotheses on $G$, for a fixed prime number $p$, Leopoldt's conjecture at $p$ for certain proper intermediate fields of $L/K$ implies…

Number Theory · Mathematics 2026-03-24 Fabio Ferri , Henri Johnston

In this paper, we show that each finite group $G$ containing at most $p^2$ Sylow $p$-subgroups for each odd prime number $p$, is a solvable group. In fact, we give a positive answer to the conjecture in \cite{Rob}.

Group Theory · Mathematics 2020-07-22 M. Zarrin