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Schwinger's algebra of selective measurements has a natural interpretation in terms of groupoids. This approach is pushed forward in this paper to show that the theory of coherent states has a natural setting in the framework of groupoids.…

Quantum Physics · Physics 2020-03-18 Fabio Di Cosmo , Alberto Ibort , Giuseppe Marmo

In this note we give a p-adic proof of Hodge symmetry for smooth, projective threefolds over complex numbers.

Algebraic Geometry · Mathematics 2013-06-14 Kirti Joshi

The purpose of this shord paper is to make the link between the fundamental work of Atiyah, Bott and Shapiro (MR0167985/29/5250) and twisted K-theory (MR0282363/43/8075). This link was implicit for a long time in the literature (for the…

K-Theory and Homology · Mathematics 2008-01-24 Max Karoubi

We develop a theory of confluence of graphs. We describe an algorithm for proving that a given system of reduction rules for abstract graphs and graphs in surfaces is locally confluent. We apply this algorithm to show that each simple Lie…

Quantum Algebra · Mathematics 2014-10-01 Adam S. Sikora , Bruce W. Westbury

The geometric calculus based on Clifford algebra is a very useful tool for geometry and physics. It describes a geometric structure which is much richer than the ordinary geometry of spacetime. A Clifford manifold ($C$-space) consists not…

High Energy Physics - Theory · Physics 2007-05-23 Matej Pavsic

We give necessary and sufficient conditions for the hull of a coherent sheaf to be coherent.

Algebraic Geometry · Mathematics 2015-09-09 János Kollár

This papper aims to present and demonstrate Clifford's version for a generalization of Miquel's theorem with the use of Euclidean geometry arguments only.

History and Overview · Mathematics 2018-12-12 Anderson R. Vargas

Conditions, related to the so-called bending problem are considered for hypersurfaces of a pseudo-Euclidean space. Corresponding theorems are proved.

Differential Geometry · Mathematics 2010-08-31 Ognian Kassabov

This paper introduces a problem of coherent-classical estimation for a class of linear quantum systems. In this problem, the estimator is a mixed quantum-classical system which produces a classical estimate of a system variable. The…

Quantum Physics · Physics 2013-10-23 Ian R. Petersen

In the first part of the paper Beilinson's theorem on the bounded derived category of coherent sheaves on P^n is extended to weighted projective spaces in a rather explicit form. To this purpose the usual category of coherent sheaves is…

Algebraic Geometry · Mathematics 2007-05-23 Alberto Canonaco

The q-deformed coherent states for a quantum particle on a circle are introduced and their properties investigated.

Quantum Physics · Physics 2009-11-10 K. Kowalski , J. Rembielinski

In this article we present a new and not fully employed geometric algebra model. With this model a generalization of the conformal model is achieved. We discuss the geometric objects that can be represented. Furthermore, we show that the…

Metric Geometry · Mathematics 2014-09-17 Daniel Klawitter

We prove some restriction theorems for flat homogeneous surfaces of codimension greater than one.

Classical Analysis and ODEs · Mathematics 2007-05-23 Laura DeCarli , Alex Iosevich

We show that every possible value for the Clifford index and gonality of a curve of a given genus on a $K3$ surface occurs.

Algebraic Geometry · Mathematics 2007-05-23 Andreas Leopold Knutsen

The goal of this paper is to formalize the notion of The Compositional Integral in The Complex Plane. We prove a convergence theorem guaranteeing its existence. We prove an analogue of Cauchy's Integral Theorem--and suggest an approach at…

General Mathematics · Mathematics 2020-11-03 James David Nixon

Fix a scheme $X$ over a field of characteristic zero that is equipped with an action of a reductive algebraic group $G$. We give necessary and sufficient conditions for a $G$-equivariant coherent sheaf on $X$ or a bounded-above complex of…

Algebraic Geometry · Mathematics 2008-04-21 Thomas Nevins

We describe the indecomposable components of the tangent bundle of the punctual Hilbert scheme of a smooth projective surface. As an application, we prove a recent conjecture about classification of products of punctual Hilbert schemes of…

Algebraic Geometry · Mathematics 2026-04-17 Supravat Sarkar

The algebraic and geometric properties of a novel generalization of Clifford's classical C4 point-circle configuration are analysed. A connection with the integrable quaternionic discrete Schwarzian Kadomtsev-Petviashvili equation is…

Exactly Solvable and Integrable Systems · Physics 2009-11-13 W. K. Schief , B. G. Konopelchenko

In this paper we present a scheme for constructing the coherent states of Klauder-Perelomov's type for a particle which is trapped in P\"oschl-Teller potentials.

Quantum Physics · Physics 2009-11-10 A. H. El Kinani , M. Daoud

We point out how some recent developments in the theory of constant scalar curvature K\"ahler metrics can be used to clarify the existence issue for such metrics in the special case of geometrically ruled complex surfaces.

Differential Geometry · Mathematics 2007-05-23 Vestislav Apostolov , Christina W. Tønnesen-Friedman