Results 21 to 30 of about 410 (45)

Quantum polydisk, quantum ball, and a q-analog of Poincar\'e's theorem

open access: yes, 2013
The classical Poincar\'e theorem (1907) asserts that the polydisk $\mathbb D^n$ and the ball $\mathbb B^n$ in $\mathbb C^n$ are not biholomorphically equivalent for $n\ge 2$.
Pirkovskii, A. Yu.
core   +1 more source

Noncommutative Grassmannian of codimension two has coherent coordinate ring

open access: yes, 2017
A noncommutative Grassmannian NGr(m, n) is introduced by Efimov, Luntz, and Orlov in `Deformation theory of objects in homotopy and derived categories III: Abelian categories' as a noncommutative algebra associated to an exceptional collection of n-m+1 ...
Piontkovski, Dmitri
core  

Algebraic geometry of crossed products

open access: yes, 2013
For projective variety X we introduce a C*-algebra A_X defined as the norm-closure of representation of the twisted homogeneous coordinate ring of X by the linear operators on a Hilbert space H.
Nikolaev, Igor
core  

Linear regulator design for stochastic systems by a multiple time scales method [PDF]

open access: yes
A hierarchically-structured, suboptimal controller for a linear stochastic system composed of fast and slow subsystems is considered. The controller is optimal in the limit as the separation of time scales of the subsystems becomes infinite.
Sandell, N. R., Jr., Teneketzis, D.
core   +1 more source

Lagrangian Formalism Over Graded Algebras

open access: yes, 1994
This paper provides a description of an algebraic setting for the Lagrangian formalism over graded algebras and is intended as the necessary first step towards the noncommutative C-spectral sequence (variational bicomplex).
Verbovetsky, Alexander
core   +1 more source

Hindman's finite sums theorem and its application to topologizations of algebras

open access: yes, 2018
The first part of the paper is a brief overview of Hindman's finite sums theorem, its prehistory and a few of its further generalizations, and a modern technique used in proving these and similar results, which is based on idempotent ultrafilters in ...
Saveliev, Denis I.
core  
Some of the next articles are maybe not open access.

On dimension theory of supermodules, super-rings, and superschemes

Communications in Algebra, 2022
Alexandr N Zubkov, P S Kolesnikov
exaly  

Noncommutative fibrations

Communications in Algebra, 2019
Atabey Kaygun
exaly  

Home - About - Disclaimer - Privacy