Results 11 to 20 of about 1,167 (194)

Indecomposable Direct Summands of Cohomologies of Curves [PDF]

open access: yesThe Quarterly Journal of Mathematics
Abstract Groups with a non-cyclic Sylow p-subgroup have too many representations over a field of characteristic p to describe them fully. A natural question arises, whether the world of representations coming from algebraic varieties with a group action is as vast as the realm of all modular representations.
Garnek, J. ; https://orcid.org/
core   +7 more sources

Modules with the Direct Summand Sum Property [PDF]

open access: yesCzechoslovak Mathematical Journal, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Vălcan, Dumitru
openaire   +4 more sources

Direct summands of serial modules [PDF]

open access: yesJournal of Pure and Applied Algebra, 1998
The authors investigate the following problem: Is every direct summand of a serial module serial? They have got affirmative answers in some special cases. Every direct summand of a finite direct sum of copies of a uniserial module \(U\) is again a finite direct sum of copies of \(U\). If \(U_1,U_2,\dots,U_n\) are uniserial modules such that for any \(i,
NGUYEN VIET DUNG, FACCHINI, ALBERTO
openaire   +4 more sources

Direct summands of class groups [PDF]

open access: yesJournal of Number Theory, 1983
AbstractLet G be a finite abelian group, and F a global field of characteristic prime to the order of G. Then there exists a finite extension of F whose class group has a direct summand isomorphic to G.
Sonn, Jack
openaire   +3 more sources

MODULES WHOSE EXACT SUBMODULES ARE ESSENTIALLY EMBEDDED IN SUMMANDS [PDF]

open access: yes, 2022
In this article we study the condition that every exact submodule is essentially embedded in direct summands in a module. It is shown that the class of modules with former property is closed under direct sums. However, we provide examples which show that
TERCAN, ADNAN   +2 more
core   +1 more source

A uniform Chevalley theorem for direct summands of polynomial rings in mixed characteristic [PDF]

open access: yes, 2022
We prove an explicit uniform Chevalley theorem for direct summands of graded polynomial rings in mixed characteristic. Our strategy relies on the introduction of a new type of differential powers that does not require the existence of a p-derivation on ...
De Stefani A.   +5 more
core   +2 more sources

Lattice isomorphisms between projection lattices of von Neumann algebras

open access: yesForum of Mathematics, Sigma, 2020
Generalizing von Neumann’s result on type II $_1$ von Neumann algebras, I characterise lattice isomorphisms between projection lattices of arbitrary von Neumann algebras by means of ring isomorphisms between the algebras of locally measurable ...
Michiya Mori
doaj   +1 more source

New light on Bergman complexes by decomposing matroid types [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2012
Bergman complexes are polyhedral complexes associated to matroids. Faces of these complexes are certain matroids, called matroid types, too. In order to understand the structure of these faces we decompose matroid types into direct summands.
Martin Dlugosch
doaj   +1 more source

Bernstein-Sato functional equations, v -filtrations, and multiplier ideals of direct summands [PDF]

open access: yes, 2021
This paper investigates the existence and properties of a Bernstein– Sato functional equation in nonregular settings. In particular, we construct D-modules in which such formal equations can be studied.
Álvarez Montaner, Josep   +5 more
core   +1 more source

Self-similarity on 4d cubic lattice [PDF]

open access: yesOpen Communications in Nonlinear Mathematical Physics
A phenomenon of "algebraic self-similarity" on 3d cubic lattice, providing what can be called an algebraic analogue of Kadanoff--Wilson theory, is shown to possess a 4d version as well. Namely, if there is a $4\times 4$ matrix $A$ whose entries
Igor G. Korepanov
doaj   +1 more source

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