O G Rgula

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Structure Of Regular Semigroups I

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Author : K. S. S. Nambooripad
language : en
Publisher: American Mathematical Soc.
Release Date : 1979

Structure Of Regular Semigroups I written by K. S. S. Nambooripad and has been published by American Mathematical Soc. this book supported file pdf, txt, epub, kindle and other format this book has been release on 1979 with Mathematics categories.

The structure of regular semigroups is studied in full generality. The principal tool used in this is the concept of a (regular) biordered set which abstractly characterizes the set of idempotents of a regular semigroup. The category of inductive groupoids is then defined as the category whose objects are pairs consisting of an ordered groupoid and an order-preserving functor of the chain groupoid of a biordered set whose vertex map is a bijection, and whose morphisms are certain commutative diagrams in the category of ordered groupoids. It is shown by an explicit construction that every regular semigroup can be constructed from an inductive groupoid and that the category of inductive groupoids is equivalent to the category of all regular semigroups. This construction is then applied to obtain the structure of all fundamental regular semigroups and all idempotent generated regular semigroups. The paper ends with a study of biordered sets of some important classes of regular semigroups.

Theory Of Regular Economies

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Author : Ryo Nagata
language : en
Publisher: World Scientific
Release Date : 2004

Theory Of Regular Economies written by Ryo Nagata and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Business & Economics categories.

This book presents a comprehensive treatment of the theory of regular economies, which is one of the most advanced topics in modern general equilibrium theory, emphasizing the basic ideas, the tools and the important applications. Although many notions and tools of differential topology are required to understand the theory, the author chooses a minimum of them and heuristically arranges them; that is, instead of lumping together all the necessary mathematics, the author puts at the beginning of each chapter the minimum mathematics required for the economic analysis of the chapter, so that the reader will not only save much effort on the mathematics but also directly understand how successfully the mathematics is used for the economic issues.

Retirement Of Officers Of The Regular Navy And Regular Marine Corps

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Author : United States. Congress. Senate. Committee on Naval Affairs
language : en
Publisher:
Release Date : 1945

Retirement Of Officers Of The Regular Navy And Regular Marine Corps written by United States. Congress. Senate. Committee on Naval Affairs and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1945 with categories.

Promotion And Involuntary Retirement Of Regular Officers In The Armed Services

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Author : United States. Congress. Senate. Committee on Armed Services
language : en
Publisher:
Release Date : 1959

Promotion And Involuntary Retirement Of Regular Officers In The Armed Services written by United States. Congress. Senate. Committee on Armed Services and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1959 with United States categories.

Regular Extensions Of Hermitian Operators

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Author : A. V. Kuzhel
language : en
Publisher: VSP
Release Date : 1998-01-01

Regular Extensions Of Hermitian Operators written by A. V. Kuzhel and has been published by VSP this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-01-01 with Science categories.

The concept of regular extensions of an Hermitian (non-densely defined) operator was introduced by A. Kuzhel in 1980. This concept is a natural generalization of proper extensions of symmetric (densely defined) operators. The use of regular extensions enables one to study various classes of extensions of Hermitian operators without using the method of linear relations. The central question in this monograph is to what extent the Hermitian part of a linear operator determines its properties. Various properties are investigated and some applications of the theory are given. Chapter 1 deals with some results from operator theory and the theory of extensions. Chapter 2 is devoted to the investigation of regular extensions of Hermitian (symmetric) operators with certain restrictions. In chapter 3 regular extensions of Hermitian operators with the use of boundary-value spaces are investigated. In the final chapter, the results from chapters 1-3 are applied to the investigation of quasi-differential operators and models of zero-range potential with internal structure.

Retention Of Extra Wide Lock On And Regular Bands On Waterfowl

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Author : R. Kahler Martinson
language : en
Publisher:
Release Date : 1967

Retention Of Extra Wide Lock On And Regular Bands On Waterfowl written by R. Kahler Martinson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with Bird banding categories.

In tests of three types of bands -- extra-wide bands, lock-on bands, and regular U.S. Fish and Wildlife Service bands -- little difference was noted in the retention qualities of the three types on waterfowl. Therefore, there appeared to be no advantage in using either the extra-wide or the lock-on type of band rather than the regular band now in use by waterfowl banders on this continent. Waterfowl banded with two bands provided recovery data that were difficult to analyze but suggested that it might be worthwhile to identify banded birds with another type of mark and evaluate the retention of bands through subsequent recapture of the birds.