Listing 1 - 10 of 15 << page
of 2
>>
Sort by

Book
The shape of congruence lattices.
Authors: ---
ISBN: 9780821883235 0821883232 Year: 2013 Publisher: Providence American Mathematical Society

Loading...
Export citation

Choose an application

Bookmark

Abstract


Book
Veech Groups and Translation Coverings
Author:
ISBN: 1000038927 3731501805 Year: 2013 Publisher: KIT Scientific Publishing

Loading...
Export citation

Choose an application

Bookmark

Abstract

A translation surface is obtained by taking plane polygons and gluing their edges by translations. We ask which subgroups of the Veech group of a primitive translation surface can be realised via a translation covering. For many primitive surfaces we prove that partition stabilising congruence subgroups are the Veech group of a covering surface. We also address the coverings via their monodromy groups and present examples of cyclic coverings in short orbits, i.e. with large Veech groups.


Book
Intervention Research in Educational Practice : Alternative Theoretical Frameworks and Application Problems
Author:
ISBN: 3830991975 3830941978 Year: 2020 Publisher: Münster Waxmann

Loading...
Export citation

Choose an application

Bookmark

Abstract

Improving learning and teaching at schools or universities may start with choosing evidence-based interventions and practices, but does not end there. To ensure sustainable changes to programs in educational practice, interventions need to address complex issues related to theories, research designs, and measurements. This book presents typical but often overlooked problems in intervention research in educational practice. These problems are embedded in various educational areas such as, amongst others, school effectiveness, instructional design or motivational aspects of teacher trainings.


Book
Congruence in contact-induced language change : language families, typological resemblance, and perceived similarity
Author:
ISBN: 9783110338348 9783110338454 3110338459 3110338343 3110338467 9783110338461 9781306430395 1306430399 3110373017 Year: 2014 Publisher: Berlin : Walter de Gruyter,

Loading...
Export citation

Choose an application

Bookmark

Abstract

In der aktuellen Kontaktlinguistik wurden überwiegend Sprachen in Kontakt betrachtet, die genetisch nicht verwandt und strukturell distant sind. Der vorliegende Sammelband setzt sich zum Ziel, mit einem Schwerpunkt im Bereich der romanischen und slavischen Sprachen die Bedeutung von bereits zu Beginn des Kontakts vorhandenen Effekten der strukturellen Kongruenz zwischen den beteiligten Sprachen zu beleuchten. Dabei spielen ererbte wie auch typologische Ähnlichkeiten eine Rolle. Modern contact linguistics has primarily focused on contact between languages that are genetically unrelated and structurally distant. This compendium of articles looks instead at the effects of pre-existing structural congruency between the affected languages at the time of their initial contact, using the Romance and Slavic languages as examples. In contact of this kind, both genetic and typological similarities play a part.

The congruences of a finite lattice : a proof-by-picture approach
Author:
ISBN: 0817644628 0817632247 Year: 2006 Publisher: Boston : Birkhäuser,

Loading...
Export citation

Choose an application

Bookmark

Abstract

The congruences of a lattice form the congruence lattice. In the past half-century, the study of congruence lattices has become a large and important field with a great number of interesting and deep results and many open problems. This self-contained exposition by one of the leading experts in lattice theory, George Grätzer, presents the major results on congruence lattices of finite lattices featuring the author's signature "Proof-by-Picture" method and its conversion to transparencies. Key features: * Includes the latest findings from a pioneering researcher in the field * Insightful discussion of techniques to construct "nice" finite lattices with given congruence lattices and "nice" congruence-preserving extensions * Contains complete proofs, an extensive bibliography and index, and nearly 80 open problems * Additional information provided by the author online at: http://www.maths.umanitoba.ca/homepages/gratzer.html/ The book is appropriate for a one-semester graduate course in lattice theory, yet is also designed as a practical reference for researchers studying lattices.


Book
The Congruences of a Finite Lattice : A "Proof-by-Picture" Approach
Author:
ISBN: 3319387960 3319387987 Year: 2016 Publisher: Cham : Springer International Publishing : Imprint: Birkhäuser,

Loading...
Export citation

Choose an application

Bookmark

Abstract

This is a self-contained exposition by one of the leading experts in lattice theory, George Grätzer, presenting the major results of the last 70 years on congruence lattices of finite lattices, featuring the author's signature Proof-by-Picture method. Key features: * Insightful discussion of techniques to construct "nice" finite lattices with given congruence lattices and "nice" congruence-preserving extensions * Contains complete proofs, an extensive bibliography and index, and over 140 illustrations * This new edition includes two new parts on Planar Semimodular Lattices and The Order of Principle Congruences, covering the research of the last 10 years The book is appropriate for a one-semester graduate course in lattice theory, and it is a practical reference for researchers studying lattices. Reviews of the first edition: "There exist a lot of interesting results in this area of lattice theory, and some of them are presented in this book. [This] monograph…is an exceptional work in lattice theory, like all the contributions by this author. … The way this book is written makes it extremely interesting for the specialists in the field but also for the students in lattice theory. Moreover, the author provides a series of companion lectures which help the reader to approach the Proof-by-Picture sections." (Cosmin Pelea, Studia Universitatis Babes-Bolyai Mathematica, Vol. LII (1), 2007) "The book is self-contained, with many detailed proofs presented that can be followed step-by-step. [I]n addition to giving the full formal details of the proofs, the author chooses a somehow more pedagogical way that he calls Proof-by-Picture, somehow related to the combinatorial (as opposed to algebraic) nature of many of the presented results. I believe that this book is a much-needed tool for any mathematician wishing a gentle introduction to the field of congruences representations of finite lattices, with emphasis on the more 'geometric' aspects." —Mathematical Reviews.


Book
Shaping jazz : cities, labels, and the global emergence of an art form
Author:
ISBN: 9781400846481 140084648X 1299652085 9781299652088 9780691150888 0691150885 Year: 2013 Publisher: Princeton, NJ : Princeton University Press,

Loading...
Export citation

Choose an application

Bookmark

Abstract

There are over a million jazz recordings, but only a few hundred tunes have been recorded repeatedly. Why did a minority of songs become jazz standards? Why do some songs--and not others--get rerecorded by many musicians? Shaping Jazz answers this question and more, exploring the underappreciated yet crucial roles played by initial production and markets--in particular, organizations and geography--in the development of early twentieth-century jazz. Damon Phillips considers why places like New York played more important roles as engines of diffusion than as the sources of standards. He demonstrates why and when certain geographical references in tune and group titles were considered more desirable. He also explains why a place like Berlin, which produced jazz abundantly from the 1920's to early 1930's, is now on jazz's historical sidelines. Phillips shows the key influences of firms in the recording industry, including how record companies and their executives affected what music was recorded, and why major companies would rerelease recordings under artistic pseudonyms. He indicates how a recording's appeal was related to the narrative around its creation, and how the identities of its firm and musicians influenced the tune's long-run popularity. Applying fascinating ideas about market emergence to a music's commercialization, Shaping Jazz offers a unique look at the origins of a groundbreaking art form.

Keywords

Jazz --- Accordion and piano music (Jazz) --- Clarinet and piano music (Jazz) --- Cornet and piano music (Jazz) --- Double bass and piano music (Jazz) --- Jazz duets --- Jazz ensembles --- Jazz music --- Jazz nonets --- Jazz octets --- Jazz quartets --- Jazz quintets --- Jazz septets --- Jazz sextets --- Jazz trios --- Jive (Music) --- Saxophone and piano music (Jazz) --- Vibraphone and piano music (Jazz) --- Wind instrument and piano music (Jazz) --- Xylophone and piano music (Jazz) --- African Americans --- Music --- Third stream (Music) --- Washboard band music --- Social aspects --- History and criticism --- E-books --- History and criticism. --- Social aspects. --- African Americans. --- Berlin. --- German jazz. --- Milenburg Joys. --- New York. --- Victorian-era firms. --- Weimar Germany. --- adoption narratives. --- anti-jazz sentiments. --- authenticity. --- black musicians. --- bottled water. --- consumers. --- critics. --- cultural elites. --- cultural markets. --- cultural objects. --- cultural products. --- diffusion. --- discographical canon. --- disconnected cities. --- disconnectedness. --- geographic mobility. --- geography. --- green technology. --- identity sequences. --- identity threats. --- identity. --- incumbents. --- jazz music. --- jazz recordings. --- jazz standards. --- jazz. --- legitimacy. --- markets. --- mobility networks. --- musicians. --- nanotechnology. --- organizational role identities. --- product appeal. --- production. --- pseudonyms. --- race. --- re-recording. --- reception. --- record company deception. --- record company. --- record labels. --- recording industry. --- recording location. --- social congruence. --- social systems. --- sociological congruence. --- software.


Book
From Objects to Diagrams for Ranges of Functors
Authors: ---
ISBN: 3642217737 3642217745 Year: 2011 Publisher: Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer,

Loading...
Export citation

Choose an application

Bookmark

Abstract

This work introduces tools from the field of category theory that make it possible to tackle a number of representation problems that have remained unsolvable to date (e.g. the determination of the range of a given functor). The basic idea is: if a functor lifts many objects, then it also lifts many (poset-indexed) diagrams.


Book
Classifying spaces of degenerating polarized Hodge structures
Authors: ---
ISBN: 0691138214 1400837111 0691138222 9780691138220 9781400837113 9780691138213 Year: 2009 Publisher: Princeton, New Jersey ; Oxfordshire, England : Princeton University Press,

Loading...
Export citation

Choose an application

Bookmark

Abstract

In 1970, Phillip Griffiths envisioned that points at infinity could be added to the classifying space D of polarized Hodge structures. In this book, Kazuya Kato and Sampei Usui realize this dream by creating a logarithmic Hodge theory. They use the logarithmic structures begun by Fontaine-Illusie to revive nilpotent orbits as a logarithmic Hodge structure. The book focuses on two principal topics. First, Kato and Usui construct the fine moduli space of polarized logarithmic Hodge structures with additional structures. Even for a Hermitian symmetric domain D, the present theory is a refinement of the toroidal compactifications by Mumford et al. For general D, fine moduli spaces may have slits caused by Griffiths transversality at the boundary and be no longer locally compact. Second, Kato and Usui construct eight enlargements of D and describe their relations by a fundamental diagram, where four of these enlargements live in the Hodge theoretic area and the other four live in the algebra-group theoretic area. These two areas are connected by a continuous map given by the SL(2)-orbit theorem of Cattani-Kaplan-Schmid. This diagram is used for the construction in the first topic.

Keywords

Hodge theory. --- Logarithms. --- Logs (Logarithms) --- Algebra --- Complex manifolds --- Differentiable manifolds --- Geometry, Algebraic --- Homology theory --- Algebraic group. --- Algebraic variety. --- Analytic manifold. --- Analytic space. --- Annulus (mathematics). --- Arithmetic group. --- Atlas (topology). --- Canonical map. --- Classifying space. --- Coefficient. --- Cohomology. --- Compactification (mathematics). --- Complex manifold. --- Complex number. --- Congruence subgroup. --- Conjecture. --- Connected component (graph theory). --- Continuous function. --- Convex cone. --- Degeneracy (mathematics). --- Diagram (category theory). --- Differential form. --- Direct image functor. --- Divisor. --- Elliptic curve. --- Equivalence class. --- Existential quantification. --- Finite set. --- Functor. --- Geometry. --- Hodge structure. --- Homeomorphism. --- Homomorphism. --- Inverse function. --- Iwasawa decomposition. --- Local homeomorphism. --- Local ring. --- Local system. --- Logarithmic. --- Maximal compact subgroup. --- Modular curve. --- Modular form. --- Moduli space. --- Monodromy. --- Monoid. --- Morphism. --- Natural number. --- Nilpotent orbit. --- Nilpotent. --- Open problem. --- Open set. --- P-adic Hodge theory. --- P-adic number. --- Point at infinity. --- Proper morphism. --- Pullback (category theory). --- Quotient space (topology). --- Rational number. --- Relative interior. --- Ring (mathematics). --- Ring homomorphism. --- Scientific notation. --- Set (mathematics). --- Sheaf (mathematics). --- Smooth morphism. --- Special case. --- Strong topology. --- Subgroup. --- Subobject. --- Subset. --- Surjective function. --- Tangent bundle. --- Taylor series. --- Theorem. --- Topological space. --- Topology. --- Transversality (mathematics). --- Two-dimensional space. --- Vector bundle. --- Vector space. --- Weak topology.

Arithmetic Moduli of Elliptic Curves. (AM-108), Volume 108
Authors: ---
ISBN: 0691083525 0691083495 1400881714 Year: 2016 Publisher: Princeton, NJ : Princeton University Press,

Loading...
Export citation

Choose an application

Bookmark

Abstract

This work is a comprehensive treatment of recent developments in the study of elliptic curves and their moduli spaces. The arithmetic study of the moduli spaces began with Jacobi's "Fundamenta Nova" in 1829, and the modern theory was erected by Eichler-Shimura, Igusa, and Deligne-Rapoport. In the past decade mathematicians have made further substantial progress in the field. This book gives a complete account of that progress, including not only the work of the authors, but also that of Deligne and Drinfeld.

Keywords

Curves, Elliptic --- Moduli theory --- Theory of moduli --- Functions of several complex variables --- Elliptic curves --- Curves, Algebraic --- Geometry, Algebraic --- 511.3 --- Analytic spaces --- Algebraic geometry --- Geometry --- 511.3 Analytical, additive and other number-theory problems. Diophantine approximations --- Analytical, additive and other number-theory problems. Diophantine approximations --- Ordered algebraic structures --- Curves, Elliptic. --- Moduli theory. --- Geometry, Algebraic. --- Abelian variety. --- Addition. --- Algebraic variety. --- Algebraically closed field. --- Ambient space. --- Arithmetic. --- Axiom. --- Barry Mazur. --- Base change. --- Calculation. --- Canonical map. --- Change of base. --- Closed immersion. --- Coefficient. --- Coherent sheaf. --- Cokernel. --- Commutative property. --- Congruence relation. --- Coprime integers. --- Corollary. --- Cusp form. --- Cyclic group. --- Dense set. --- Diagram (category theory). --- Dimension. --- Discrete valuation ring. --- Disjoint union. --- Divisor. --- Eigenfunction. --- Elliptic curve. --- Empty set. --- Factorization. --- Field of fractions. --- Finite field. --- Finite group. --- Finite morphism. --- Free module. --- Functor. --- Group (mathematics). --- Integer. --- Irreducible component. --- Level structure. --- Local ring. --- Maximal ideal. --- Modular curve. --- Modular equation. --- Modular form. --- Moduli space. --- Morphism of schemes. --- Morphism. --- Neighbourhood (mathematics). --- Noetherian. --- One-parameter group. --- Open problem. --- Prime factor. --- Prime number. --- Prime power. --- Q.E.D. --- Regularity theorem. --- Representation theory. --- Residue field. --- Riemann hypothesis. --- Smoothness. --- Special case. --- Subgroup. --- Subring. --- Subset. --- Theorem. --- Topology. --- Two-dimensional space. --- Zariski topology.

Listing 1 - 10 of 15 << page
of 2
>>
Sort by