منابع مشابه
Quasicrystals and geometry: a Book Review
Penrose tilings (Fig. 1) are beautiful. They also suggest significant new mathematics, so it is about time someone wrote a book about them which is readable (in fact, eminently readable) by mathematicians. The book, Quasicrystals and geometry, by Marjorie Senechal, has an even broader goal: to present certain developments in crystallography from the past decade. The developments were generated ...
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The subtitle of the book is Genetic, Epigenetic, Behavioral, and Symbolic Variation in the History of Life; thus, the four dimensions of the title. ‘‘The challenge [this book] offers is not to Darwin’s theory of evolution through natural se lection, but to the prevalent gene-based unidimensional ver sion of it.’’ The audience to which the book is directed is revealed in the Preface in the fol...
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We review the relations between (twisted) supersymmetric gauge theories in four dimensions and moduli problems in four-dimensional topology, and we study in detail the non-abelian monopole equations from this point of view. The relevance of exact results in N = 1 and N = 2 supersymmetric gauge theories to the computation of topological invariants is emphasized. Some background material is provi...
متن کاملGeometry of N = 1 Dualities in Four Dimensions
We discuss how N = 1 dualities in four dimensions are geometrically realized by wrapping D-branes about 3-cycles of Calabi-Yau threefolds. In this setup the N = 1 dualities for SU , SO and U Sp gauge groups with fundamental fields get mapped to statements about the monodromy and relations among 3-cycles of Calabi-Yau threefolds. The connection between the theory and its dual requires passing th...
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Many readers will be familiar with the quantitative and distributional techniques of register analysis presented by Biber (1988). The present book re-uses this earlier study on variation in British English [henceforth El, along with "a synthesis" (p. xv) of Ph.D. studies done with Biber at the University of Southern California: by Niko Besnier on Nukulaelae Tuvaluan IT], Mohamed Hared on Somali...
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ژورنال
عنوان ژورنال: Bulletin of the American Mathematical Society
سال: 1915
ISSN: 0002-9904
DOI: 10.1090/s0002-9904-1915-02630-3