Results 11 to 20 of about 147 (142)

Commutative bidifferential algebra [PDF]

open access: yes, 2022
Motivated by the Poisson Dixmier-Moeglin equivalence problem,a systematic study of commutative unitary rings equipped with a biderivation,namely a binary operation that is a derivation in each argument, is here begun,with an eye toward the geometry of ...
Moosa, Rahim   +3 more
core   +1 more source

Invariants and separating morphisms for algebraic group actions [PDF]

open access: yes, 2014
The first part of this paper is a refinement of Winkelmann’s work on invariant rings and quotients of algebraic groups actions an affine varieties where we take a more geometric point of view.
Kraft, Hanspeter   +5 more
core   +1 more source

The ascent-descent property for 2-termsilting complexes [PDF]

open access: yes, 2020
We will prove that over commutative rings the silting property of 2-termcomplexes induced by morphisms between projective modules is preserved and reflectedby faithfully flat ...
Breaz, Simion
core   +1 more source

One the P-Adic Local Invariant Cycle Theorem [PDF]

open access: yes, 2012
The aim of this paper is to consider the $p$-adic local invariant cycle theorem in the mixed characteristic case. In the first part of the paper, via case-by-case discussion, we construct the $p$-adic specialization map, and then write out the ...
Wu, Yi-Tao
core   +1 more source

Big Cohen-macaulay Modules, Morphisms Of Perfect Complexes, And Intersection Theorems In Local Algebra

open access: yes, 2021
There is a well known link from the first topic in the title to the third one. In this paper we thread that link through the second topic. The central result is a criterion for the tensor nilpotence of morphisms of perfect complexes over commutative ...
Avramov, Luchezar L.   +2 more
core   +1 more source

Report on the Brauer-Thrall conjectures: Rojter's theorem and the theorem of Nazarova and Rojter (on algorithms for solving vectorspace problems. I)

open access: yes, 1980
Ringel CM. Report on the Brauer-Thrall conjectures: Rojter's theorem and the theorem of Nazarova and Rojter (on algorithms for solving vectorspace problems. I). In: Dlab V, Gabriel P, eds. Representation Theory I.
Dlab, Vlastimil   +3 more
core   +1 more source

Going up along absolutely flat morphisms

open access: yes, 1983
Flat morphisms from A to B (commutative and unitary rings) such that the multiplication B⊗AB→B is flat, have many of the properties of ind-etale morphisms. They don't raise weak dimension. As a consequence they preserve integral closure.
Olivier, J.P., J.P. Olivier
core   +1 more source

A Kochen–Specker theorem for integer matrices and noncommutative spectrum functors [PDF]

open access: yes, 2017
We investigate the possibility of constructing Kochen–Specker uncolorable sets of idempotent matrices whose entries lie in various rings, including the rational numbers, the integers, and finite fields.
Ben-Zvi, Michael   +7 more
core   +1 more source

Representation Stability for Cellular Resolutions

open access: yes, 2021
This thesis is on cellular resolutions and the invariants of resolutions of monomial ideals. The general area of these topics is combinatorial commutative algebra, and as much of pure mathematics, the studied questions in the thesis are motivated mainly
Jakobsson, Laura
core   +1 more source

On the Lattice of Z-ideals of a Commutative Ring

open access: yes, 2019
We prove that the lattice of z-ideals of a commutative ring with identity is a coherent frame. We characterize when it is a Yosida frame, and when it satisfies some projectability properties.
Ighedo, Oghenetega, McGovern, Warren Wm.
core   +1 more source

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