Minimal Weak Truth Table Degrees and Computably Enumerable Turing Degrees
Author: Rod G. Downey
Publisher:
Published: 2020
Total Pages: 90
ISBN-13: 9781470461379
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Minimal Weak Truth Table Degrees and Computably Enumerable Turing Degrees
Author: Rodney G. Downey
Publisher: American Mathematical Soc.
Published: 2020-09-28
Total Pages: 90
ISBN-13: 1470441624
DOWNLOAD EBOOK →First, there are sets with minimal weak truth table degree which bound noncomputable computably enumerable sets under Turing reducibility. Second, no set with computable enumerable Turing degree can have minimal weak truth table degree. Third, no $Delta^0_2$ set which Turing bounds a promptly simple set can have minimal weak truth table degree.
Turing and Truth Table Degrees of 1-generic and Recursively Enumerable Sets
Art And Practice Of Mathematics, The: Interviews At The Institute For Mathematical Sciences, National University Of Singapore, 2010-2020
Author: Yu Kiang Leong
Publisher: World Scientific
Published: 2021-06-23
Total Pages: 442
ISBN-13: 9811219605
DOWNLOAD EBOOK →This book constitutes the second volume of interviews with prominent mathematicians and mathematical scientists who visited the Institute for Mathematical Sciences, National University of Singapore. First published in the Institute's newsletter Imprints during the period 2010-2020, they offer glimpses of an esoteric universe as viewed and experienced by some of the leading and creative practitioners of the craft of mathematics.The topics covered in this volume are wide-ranging, running from pure mathematics (logic, number theory, algebraic geometry) to applied mathematics (mathematical modeling, fluid dynamics) through probability and statistics, mathematical physics, theoretical computer science and financial mathematics. This eclectic mix of the abstract and the concrete should interest those who are enthralled by the mystique and power of mathematics, whether they are students, researchers or the non-specialists.By briefly tracing the paths traveled by the pioneers of different national backgrounds, the interviews attempt to put a cultural face to an intellectual endeavor that is often perceived as dry and austere by the uninitiated. They should also interest those who are intrigued by the influence of the environment on the creative spirit, and, in particular, those who are interested in the psychology and history of ideas.
Algorithmic Randomness and Complexity
Author: Rodney G. Downey
Publisher: Springer Science & Business Media
Published: 2010-10-29
Total Pages: 883
ISBN-13: 0387684417
DOWNLOAD EBOOK →Computability and complexity theory are two central areas of research in theoretical computer science. This book provides a systematic, technical development of "algorithmic randomness" and complexity for scientists from diverse fields.
Differential Function Spectra, the Differential Becker-Gottlieb Transfer, and Applications to Differential Algebraic K-Theory
Author: Ulrich Bunke
Publisher: American Mathematical Soc.
Published: 2021-06-21
Total Pages: 177
ISBN-13: 1470446855
DOWNLOAD EBOOK →We develop differential algebraic K-theory for rings of integers in number fields and we construct a cycle map from geometrized bundles of modules over such a ring to the differential algebraic K-theory. We also treat some of the foundational aspects of differential cohomology, including differential function spectra and the differential Becker-Gottlieb transfer. We then state a transfer index conjecture about the equality of the Becker-Gottlieb transfer and the analytic transfer defined by Lott. In support of this conjecture, we derive some non-trivial consequences which are provable by independent means.
Operator Theory on One-Sided Quaternion Linear Spaces: Intrinsic $S$-Functional Calculus and Spectral Operators
Author: Jonathan Gantner
Publisher: American Mathematical Society
Published: 2021-02-10
Total Pages: 114
ISBN-13: 1470442388
DOWNLOAD EBOOK →Two major themes drive this article: identifying the minimal structure necessary to formulate quaternionic operator theory and revealing a deep relation between complex and quaternionic operator theory. The theory for quaternionic right linear operators is usually formulated under the assumption that there exists not only a right- but also a left-multiplication on the considered Banach space $V$. This has technical reasons, as the space of bounded operators on $V$ is otherwise not a quaternionic linear space. A right linear operator is however only associated with the right multiplication on the space and in certain settings, for instance on quaternionic Hilbert spaces, the left multiplication is not defined a priori, but must be chosen randomly. Spectral properties of an operator should hence be independent of the left multiplication on the space.
Łojasiewicz-Simon Gradient Inequalities for Coupled Yang-Mills Energy Functionals
Author: Paul M Feehan
Publisher: American Mathematical Society
Published: 2021-02-10
Total Pages: 138
ISBN-13: 1470443023
DOWNLOAD EBOOK →The authors' primary goal in this monograph is to prove Łojasiewicz-Simon gradient inequalities for coupled Yang-Mills energy functions using Sobolev spaces that impose minimal regularity requirements on pairs of connections and sections.
Theory of Fundamental Bessel Functions of High Rank
Author: Zhi Qi
Publisher: American Mathematical Society
Published: 2021-02-10
Total Pages: 123
ISBN-13: 1470443252
DOWNLOAD EBOOK →In this article, the author studies fundamental Bessel functions for $mathrm{GL}_n(mathbb F)$ arising from the Voronoí summation formula for any rank $n$ and field $mathbb F = mathbb R$ or $mathbb C$, with focus on developing their analytic and asymptotic theory. The main implements and subjects of this study of fundamental Bessel functions are their formal integral representations and Bessel differential equations. The author proves the asymptotic formulae for fundamental Bessel functions and explicit connection formulae for the Bessel differential equations.
Gromov-Witten Theory of Quotients of Fermat Calabi-Yau Varieties
Author: Hiroshi Iritani
Publisher: American Mathematical Soc.
Published: 2021-06-21
Total Pages: 92
ISBN-13: 1470443635
DOWNLOAD EBOOK →Gromov-Witten theory started as an attempt to provide a rigorous mathematical foundation for the so-called A-model topological string theory of Calabi-Yau varieties. Even though it can be defined for all the Kähler/symplectic manifolds, the theory on Calabi-Yau varieties remains the most difficult one. In fact, a great deal of techniques were developed for non-Calabi-Yau varieties during the last twenty years. These techniques have only limited bearing on the Calabi-Yau cases. In a certain sense, Calabi-Yau cases are very special too. There are two outstanding problems for the Gromov-Witten theory of Calabi-Yau varieties and they are the focus of our investigation.
