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Descent varieties for algebraic covers [PDF]
Journal für die reine und angewandte Mathematik (Crelles Journal), 2004 This paper is about descent theory for algebraic covers. Typical questions concern fields of definition, models, moduli spaces, families, etc. of covers. Here we construct descent varieties. Associated to any given cover f , they have the property that whether they have rational points on a given field k is the obstruction to descending the field of ...
Dèbes, Pierre +2 more
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Communications in Algebra, 1996
In dealing with the central extensions of a finite group G one finds that although covers need not be isomorphic, for each such H there exists a cover for which H is a. homomorphic image [1]. For finite dimensional Lie algebras, covers are isomorphic. We shall show that the second property also holds for Lie algebras.
Peggy Batten, Ernest Stitzinger
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In dealing with the central extensions of a finite group G one finds that although covers need not be isomorphic, for each such H there exists a cover for which H is a. homomorphic image [1]. For finite dimensional Lie algebras, covers are isomorphic. We shall show that the second property also holds for Lie algebras.
Peggy Batten, Ernest Stitzinger
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Geometric Algebra for Physicists
, 2003Geometric algebra is a powerful mathematical language with applications across a range of subjects in physics and engineering. This book is a complete guide to the current state of the subject with early chapters providing a self-contained introduction ...
C. Doran, A. Lasenby
semanticscholar +1 more source
Markov Chains and Mixing Times
, 2008This book is an introduction to the modern approach to the theory of Markov chains. The main goal of this approach is to determine the rate of convergence of a Markov chain to the stationary distribution as a function of the size and geometry of the ...
D. A. Levin +2 more
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Essential Algorithms, 2019
covering all aspects of numerical algorithms, theoretical results, implementation, numerical stability, complexity, and applications. The journal is intended to cover all aspects of numerical algorithms from theory, definition and usefulness to questions
Marcell Schweitzer, Denis Duesseldorf
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covering all aspects of numerical algorithms, theoretical results, implementation, numerical stability, complexity, and applications. The journal is intended to cover all aspects of numerical algorithms from theory, definition and usefulness to questions
Marcell Schweitzer, Denis Duesseldorf
semanticscholar +1 more source
Differential Games in Economics and Management Science: List of tables
, 2000A comprehensive, self-contained survey of the theory and applications of differential games, one of the most commonly used tools for modelling and analysing economics and management problems which are characterised by both multiperiod and strategic ...
E. Dockner +3 more
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2004
Let p be a prime number and let G be a finite group. The subgroup p(G) ⊂ G is defined as the group generated by all elements in G having as order a power of p. Equivalent definitions of p(G) are: (i) p(G) is the smallest normal subgroup such that the factor group G/p(G) has no elements with order p.
Jean Fresnel, Marius van der Put
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Let p be a prime number and let G be a finite group. The subgroup p(G) ⊂ G is defined as the group generated by all elements in G having as order a power of p. Equivalent definitions of p(G) are: (i) p(G) is the smallest normal subgroup such that the factor group G/p(G) has no elements with order p.
Jean Fresnel, Marius van der Put
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, 2008
This paper explores the temporal composition of the main Land-use/Land-cover (LULC) trajectories, examines the spatial configuration of the trajectories, and derives the probabilities of transitions in the Northern Ecuadorian Amazon (NEA).
C. Mena
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This paper explores the temporal composition of the main Land-use/Land-cover (LULC) trajectories, examines the spatial configuration of the trajectories, and derives the probabilities of transitions in the Northern Ecuadorian Amazon (NEA).
C. Mena
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Numerical analysis: an introduction
, 1997This is a text in numerical analysis which is taken to mean the branch of mathematics that develops and analyzes computational methods dealing with problems arising in classical analysis, approximations theory, the theory of equations, and ordinary ...
W. Gautschi
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, 2005
Encyclopedia of Mathematics is a comprehensive one-volume encyclopedia designed for high school through early college students. More than 1,000 entries, more than 125 photographs and illustrations, and numerous essays cover the principal areas and issues
James Tanton
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Encyclopedia of Mathematics is a comprehensive one-volume encyclopedia designed for high school through early college students. More than 1,000 entries, more than 125 photographs and illustrations, and numerous essays cover the principal areas and issues
James Tanton
semanticscholar +1 more source