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[كتاب][B] Quaternion algebras
J Voight - 2021 - library.oapen.org
This open access textbook presents a comprehensive treatment of the arithmetic theory of
quaternion algebras and orders, a subject with applications in diverse areas of mathematics …
quaternion algebras and orders, a subject with applications in diverse areas of mathematics …
Orbifolds as stacks?
E Lerman - L'Enseignement mathématique, 2010 - ems.press
The first goal of this survey paper is to argue that if orbifolds are groupoids, then the
collection of orbifolds and their maps has to be thought of as a 2-category. Compare this with …
collection of orbifolds and their maps has to be thought of as a 2-category. Compare this with …
[كتاب][B] Sasakian geometry
C Boyer, K Galicki - 2007 - academic.oup.com
Sasakian manifolds were first introduced in 1962. This book's main focus is on the intricate
relationship between Sasakian and Kähler geometries, especially when the Kähler structure …
relationship between Sasakian and Kähler geometries, especially when the Kähler structure …
[كتاب][B] Groupoids, inverse semigroups, and their operator algebras
A Paterson - 2012 - books.google.com
In recent years, it has become increasingly clear that there are important connections
relating three concepts--groupoids, inverse semigroups, and operator algebras. There has …
relating three concepts--groupoids, inverse semigroups, and operator algebras. There has …
[كتاب][B] Poisson structures and their normal forms
JP Dufour, NT Zung - 2006 - books.google.com
Poisson manifolds play a fundamental role in Hamiltonian dynamics, where they serve as
phase spaces. They also arise naturally in other mathematical problems, and form a bridge …
phase spaces. They also arise naturally in other mathematical problems, and form a bridge …
Differential cohomology in a cohesive infinity-topos
U Schreiber - arxiv preprint arxiv:1310.7930, 2013 - arxiv.org
We formulate differential cohomology and Chern-Weil theory--the theory of connections on
fiber bundles and of gauge fields--abstractly in the context of a certain class of higher …
fiber bundles and of gauge fields--abstractly in the context of a certain class of higher …
Orbifolds as groupoids: an introduction
I Moerdijk - arxiv preprint math/0203100, 2002 - arxiv.org
arxiv:math/0203100v1 [math.DG] 11 Mar 2002 Page 1 arxiv:math/0203100v1 [math.DG] 11
Mar 2002 Orbifolds as Groupoids: an Introduction Ieke Moerdijk Contents 1 Lie groupoids 2 2 …
Mar 2002 Orbifolds as Groupoids: an Introduction Ieke Moerdijk Contents 1 Lie groupoids 2 2 …
[كتاب][B] Topology of singular spaces and constructible sheaves
J Schürmann - 2012 - books.google.com
Assuming that the reader is familiar with sheaf theory, the book gives a self-contained
introduction to the theory of constructible sheaves related to many kinds of singular spaces …
introduction to the theory of constructible sheaves related to many kinds of singular spaces …
[كتاب][B] An introduction to infinite-dimensional differential geometry
A Schmeding - 2022 - books.google.com
Introducing foundational concepts in infinite-dimensional differential geometry beyond
Banach manifolds, this text is based on Bastiani calculus. It focuses on two main areas of …
Banach manifolds, this text is based on Bastiani calculus. It focuses on two main areas of …
The local fundamental group of a Kawamata log terminal singularity is finite
L Braun - Inventiones mathematicae, 2021 - Springer
We prove a conjecture of Kollár stating that the local fundamental group of a klt singularity x
is finite. In fact, we prove a stronger statement, namely that the fundamental group of the …
is finite. In fact, we prove a stronger statement, namely that the fundamental group of the …