Results 111 to 120 of about 4,480 (224)
Surveys in Mathematics and its Applications, 2006 The purpose of this paper is to recall the main ingredients of the construction of the C*-algebra of a groupoid (introduced by Renault in [A groupoid approach to C*-algebras, Lecture Notes in Math., Springer-Verlag, 793, 1980]) and to collect some ...
Madalina Roxana Buneci
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Approximations for uniformly continuous functions on groupoids [PDF]
Surveys in Mathematics and its Applications, 2017 The purpose of this paper is to prove an approximation/extension theorem for a family of partial functions on a groupoid satisfying a uniform compatibility condition.
Mădălina Roxana Buneci
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Existence of groupoid models for diagrams of groupoid correspondences
This article continues the study of diagrams in the bicategory of étale groupoid correspondences. We prove that any such diagram has a groupoid model and that the groupoid model is a locally compact étale groupoid if the diagram is locally compact and ...
Ko, Joanna, Meyer, Ralf
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A GROUPOID FRAMEWORK FOR STUDY ASYMPTOTIC BEHAVIOR OF A DISCRETE SYSTEM [PDF]
Fiabilitate şi Durabilitate, 2017 The purpose of this note is to introduce four different groupoids associated to a function f:XNNX, where X is a uniform space. Thesegroupoids allow to study within a unified framework theasymptotic behavior of thediscrete systems of the form xn+1 =
Mădălina Roxana BUNECI
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Translatability and translatable semigroups
Open Mathematics, 2018 The concept of a k-translatable groupoid is explored in depth. Some properties of idempotent k-translatable groupoids, left cancellative k-translatable groupoids and left unitary k-translatablegroupoids are proved. Necessary and sufficient conditions are
Dudek Wieslaw A., Monzo Robert A. R.
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INTUITIONISTIC FUZZY GROUPOIDS AND ACTIONS [PDF]
Analele Universităţii "Constantin Brâncuşi" din Târgu Jiu: Seria Inginerie, 2019 The purpose of this short note is to introduce a notion of (T,S)-intuitionistic fuzzy subgroupoid that allows to study within a unified framework various intuitionistic fuzzy structures such as intuitionistic fuzzy sets, intuitionistic fuzzy subgroup and
Mădălina Roxana Buneci
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ON SYMPLECTIC DOUBLE GROUPOIDS AND THE DUALITY OF POISSON GROUPOIDS
International Journal of Mathematics, 1999 We prove that the cotangent of a double Lie groupoid S has itself a double groupoid structure with sides the duals of associated Lie algebroids, and double base the dual of the Lie algebroid of the core of S. Using this, we prove a result outlined by Weinstein in 1988, that the side groupoids of a general symplectic double groupoid are Poisson ...
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Groupoid models for diagrams of groupoid correspondences
, 2022 A diagram of groupoid correspondences is a homomorphism to the bicategory of étale groupoid correspondences. We study examples of such diagrams, including complexes of groups and self-similar higher-rank graphs. We encode the diagram in a single groupoid, which we call its groupoid model.
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GALOIS GROUPOID AND CONFLUENCE OF DIFFERENCE EQUATIONS
, 2020 In this article we compute Galois groupoid of discret Painlevé equations. Our main tool is a semi-continuity theorem for the Galois groupoid in a confluence situation of a diffrence equation to a differential ...
Casale, Guy, Davy, Damien
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The tangent groupoid and hypoelliptic operators
, 2017 In the 1980s, Alain Connes gave a conceptually appealing proof of the Atiyah-Singer index theorem by means of the so-called "tangent groupoid". Over time, the tangent groupoid was generalized to more complicated analytic settings. I will discuss the role
van Erp, Erik
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