Results 41 to 50 of about 2,108,594 (166)

Search for non-Abelian Majorana braiding statistics in superconductors

open access: yesSciPost Physics Lecture Notes, 2020
This is a tutorial review of methods to braid the world lines of non-Abelian anyons (Majorana zero-modes) in topological superconductors. That "Holy Grail" of topological quantum information processing has not yet been reached in the laboratory, but ...
C. W. J. Beenakker
doaj   +1 more source

Feature‐Level Analysis and Adversarial Transfer in Rotationally Equivariant Quantum Machine Learning

open access: yesAdvanced Quantum Technologies, Volume 9, Issue 11, November 2026.
A detailed feature‐level analysis reveals how symmetry‐dependent features relate to adversarial transfer robustness in equivariant quantum machine learning models, paving the way for the design of future models with improved robustness. ABSTRACT Group‐equivariant quantum models are designed to exploit symmetry and can improve trainability, but it ...
Maureen Krumtünger
wiley   +1 more source

On the Hodge conjecture for products of certain surfaces [PDF]

open access: yes, 2003
In this thesis we prove the Hodge conjecture for products of smooth projective surfaces S(_1) x S(_2), where S(_2) = A is an Abelian surface and S (_1) is such that P(_g)(S(_1)) = 1, q = 2.
J. Ramón Marí, José   +1 more
core  

Hyperbolicity and fundamental groups of complex quasi‐projective varieties (III): Applications

open access: yesProceedings of the London Mathematical Society, Volume 133, Issue 5, November 2026.
Abstract This paper is Part III of a series of three. We begin by introducing the notion of h$h$‐special varieties, which can be seen as varieties “chain‐connected by the Zariski closures of entire curves.” We prove that if X$X$ is either a special smooth complex quasi‐projective variety in the sense of Campana or an h$h$‐special variety, then for any ...
Benoît Cadorel   +2 more
wiley   +1 more source

Every finite abelian group is the group of rational points of an ordinary abelian variety over F2, F3 and F5 [PDF]

open access: yes, 2023
We show that every finite abelian group occurs as the group of rational points of an ordinary abelian variety over F 2, F 3 and F 5. We produce partial results for abelian varieties over a general finite field F q.
Marseglia, Stefano   +3 more
core   +3 more sources

Note on quasivarieties generated by finite pointed abelian groups

open access: yesOpen Mathematics
We prove that a finite pointed abelian group generates a finitely axiomatizable variety that has a finite quasivariety lattice. As a consequence, we obtain that a quasivariety generated by a finite pointed abelian group has a finite basis of quasi ...
Basheyeva Ainur, Lutsak Svetlana
doaj   +1 more source

Miyaoka–Yau inequalities and the topological characterization of certain klt varieties

open access: yesComptes Rendus. Mathématique
Ball quotients, hyperelliptic varieties, and projective spaces are characterized by their Chern classes, as the varieties where the Miyaoka–Yau inequality becomes an equality.
Greb, Daniel   +2 more
doaj   +1 more source

Detectable gravitational wave signals from inflationary preheating

open access: yesPhysics Letters B, 2023
We consider gravitational wave (GW) production during preheating in hybrid inflation models where an axion-like waterfall field couples to Abelian gauge fields.
Yanou Cui, Evangelos I. Sfakianakis
doaj   +1 more source

Interpretability and Representability of Commutative Algebra, Algebraic Topology, and Topological Spectral Theory for Real‐World Data

open access: yesAdvanced Intelligent Discovery, Volume 2, Issue 5, October 2026.
This article investigates how persistent homology, persistent Laplacians, and persistent commutative algebra reveal complementary geometric, topological, and algebraic invariants or signatures of real‐world data. By analyzing shapes, synthetic complexes, fullerenes, and biomolecules, the article shows how these mathematical frameworks enhance ...
Yiming Ren, Guo‐Wei Wei
wiley   +1 more source

The equations of singular loci of ample divisors on (subvarieties of) abelian varieties

open access: yesLe Matematiche, 2008
In this paper we consider ideal sheaves associated to the singular loci of a divisor in a linear system |L| of an ample line bundle on a complex abelian variety.
Luigi Lombardi, Francesco Malaspina
doaj  

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