Results 1 to 10 of about 19,931 (156)

Noncommutative geometry of algebraic curves [PDF]

open access: yesProceedings of the American Mathematical Society, 2009
A covariant functor from the category of generic complex algebraic curves to a category of the AF-algebras is constructed. The construction is based on a representation of the Teichmueller space of a curve by the measured foliations due to Douady ...
Nikolaev, Igor
core   +4 more sources

13. Noncommutative algebraic geometry [PDF]

open access: yesBanach Center Publications, 2017
Several sets of quaternionic functions are described and studied with respect to hy-perholomorphy, addition and (non commutative) multiplication, on open sets of H, then Hamil-ton 4-manifolds analogous to Riemann surfaces, for H instead of C, are defined, and so begin to describe a class of four dimensional manifolds.
exaly   +5 more sources

Algebraic deformations of toric varieties I. General constructions [PDF]

open access: yesAdvances in Mathematics, 2013
We construct and study noncommutative deformations of toric varieties by combining techniques from toric geometry, isospectral deformations, and noncommutative geometry in braided monoidal categories.
Cirio, Lucio   +2 more
core   +5 more sources

Noncommutative real algebraic geometry of Kazhdan's property (T) [PDF]

open access: yesJournal of the Institute of Mathematics of Jussieu, 2015
It is well-known that a finitely generated group $\Gamma$ has Kazhdan's property (T) if and only if the Laplacian element $\Delta$ in ${\mathbb R}[\Gamma]$ has a spectral gap.
Ozawa, Narutaka
core   +6 more sources

Higher-rank tensor non-Abelian field theory: Higher-moment or subdimensional polynomial global symmetry, algebraic variety, Noether's theorem, and gauging

open access: yesPhysical Review Research, 2021
With a view toward a fracton theory in condensed matter, we introduce a higher-moment polynomial degree-p global symmetry, acting on complex scalar/vector/tensor fields (e.g., ordinary or vector global symmetry for p=0 and p=1 respectively).
Juven Wang, Kai Xu, Shing-Tung Yau
doaj   +1 more source

A Survey on Some Algebraic Characterizations of Hilbert’s Nullstellensatz for Non-commutative Rings of Polynomial Type

open access: yesIngeniería y Ciencia, 2020
In this paper we present a survey of some algebraic characterizations of Hilbert’s Nullstellensatz for non-commutative rings of polynomial type. Using several results established in the literature, we obtain a version of this theorem for the skew ...
Armando Reyes   +1 more
doaj   +1 more source

Nonstandard Analysis, Deformation Quantization and Some Logical Aspects of (Non)Commutative Algebraic Geometry

open access: yesMathematics, 2020
This paper surveys results related to well-known works of B. Plotkin and V. Remeslennikov on the edge of algebra, logic and geometry. We start from a brief review of the paper and motivations. The first sections deal with model theory.
Alexei Kanel-Belov   +6 more
doaj   +1 more source

Geometry of noncommutative algebras [PDF]

open access: yesBanach Center Publications, 2011
Let X be a scheme over an algebraically closed field k, and let x ∈ SpecR ⊆ X be a closed point corresponding to the maximal ideal m ⊆ R. Then OˆX,x is isomorphic to the prorepresenting hull, or local formal moduli, of the deformation functor DefR/m : → Sets. This suffices to reconstruct X up to etal´e coverings.
Eriksen, Eivind, Siqveland, Arvid
openaire   +2 more sources

Hopf Algebras, Renormalization and Noncommutative Geometry [PDF]

open access: yesCommunications in Mathematical Physics, 1998
We explore the relation between the Hopf algebra associated to the renormalization of QFT and the Hopf algebra associated to the NCG computations of transverse index theory for foliations.
Connes, Alain, Kreimer, Dirk
openaire   +2 more sources

HOPF ALGEBRAS IN NONCOMMUTATIVE GEOMETRY [PDF]

open access: yesGeometric and Topological Methods for Quantum Field Theory, 2003
Latex2e, 76 pages, lecture notes for the CIMPA Summer School in Villa de Leyva, Colombia, July 2001; minor corrections, 3 references ...
openaire   +3 more sources

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