Wahrend einer Konferenz zum "Jiidischen Nietzscheanismus" 1995 in Greifs wald hatte mich EGBERT BRIESKORN eingeladen, in der Edition der Gesam melten Werke FELIX HAUSDORFFS dessen philosophische Schriften mit einer Einleitung herauszugeben. FELIX HAUSDORFF hatte darin eng an NIETZSCHE angeschlossen, und er hatte in Greifswald sein erstes Ordinariat fUr Mathematik erhalten - ich sagte spontan und, wie sich bald herausstellen soUte, leichtsinnig ja. Statt nur mit einer kurzen Einleitung hatte ich es bald auch mit langwieri gen Erschlief&ungen des Werks und seiner Kommentierung zu tun. Doch je mehr ich mich in FELIX HAUSDORFFS Schriften einarbeitete, desto mehr notigten sie mir Respekt ab: in ihrer Klarheit, ihrer Redlichkeit, ihrer vornehmen Beschei denheit, ihrer gedanklichen Selbstandigkeit und vor allem in ihrer erstaunlichen Aktualitat. Vielleicht ist nach iiber hundert Jahren nun die Zeit gekommen, in der sie fiir die philosophische Orientierung so fruchtbar werden konnen, wie sie es verdienen. Bei der Kommentierung haben viele helfende Hande mitgewirkt. Mein Dank gilt zuerst den studentischen und wissenschaftlichen Hilfskraften: MIRKO GRON DER und KATRIN STELTER haben die Hauptarbeit in der Recherchierung der Belege iibernommen, JUDITH KARLA und TANJA SCHMIDT eine Vielzahl von Nachweisen beigesteuert, WOLFGANG SCHNEIDER und RALF WITZLER an den Vorarbeiten mitgewirkt. Doz. Dr. REINHARD PESTER (friiher Greifswald, jetzt Berlin) hat uns bei den Nachweisen zu LOTZE, Prof. Dr. MARTIN HOSE (frii her Greifswald, jetzt Miinchen) bei Zitaten aus der griechischen Literatur, Prof. Dr. GISELA FEBEL (friiher Stuttgart, jetzt Bremen) bei Zitaten aus der franzosischen Literatur, Prof. Dr. WALTER ERHART, Prof. Dr."

Aus den Rezensionen: "Was das Buch vor allem auszeichnet, ist die unkonventionelle Darstellungsweise. Hier wird Mathematik nicht im trockenen Definition-Satz-Beweis-Stil geboten, sondern sie wird dem Leser pointiert und mit viel Humor schmackhaft gemacht. In ungew hnlich fesselnder Sprache geschrieben, ist die Lekt re dieses Buches auch ein belletristisches Vergn gen. Fast 200 sehr instruktive und sch ne Zeichnungen unterst tzen das Verst ndnis, motivieren die behandelten Aussagen, modellieren die tragenden Beweisideen heraus. Ungew hnlich ist auch das Register, das unter jedem Stichwort eine Kurzdefinition enth lt und somit umst ndliches Nachschlagen erspart."
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This invaluable book is based on the notes of a graduate course on differential geometry which the author gave at the Nankai Institute of Mathematics. It consists of two parts: the first part contains an introduction to the geometric theory of characteristic classes due to Shiing-shen Chern and Andre Weil, as well as a proof of the Gauss-Bonnet-Chern theorem based on the Mathai-Quillen construction of Thom forms; the second part presents analytic proofs of the Poincare-Hopf index formula, as well as the Morse inequalities based on deformations introduced by Edward Witten.

This book is an elementary introduction to geometric topology and its applications to chemistry, molecular biology, and cosmology. It does not assume any mathematical or scientific background, sophistication, or even motivation to study mathematics. It is meant to be fun and engaging while drawing students in to learn about fundamental topological and geometric ideas. Though the book can be read and enjoyed by nonmathematicians, college students, or even eager high school students, it is intended to be used as an undergraduate textbook. The book is divided into three parts corresponding to the three areas referred to in the title. Part 1 develops techniques that enable two- and three-dimensional creatures to visualize possible shapes for their universe and to use topological and geometric properties to distinguish one such space from another. Part 2 is an introduction to knot theory with an emphasis on invariants. Part 3 presents applications of topology and geometry to molecular symmetries, DNA, and proteins. Each chapter ends with exercises that allow for better understanding of the material. The style of the book is informal and lively. Though all of the definitions and theorems are explicitly stated, they are given in an intuitive rather than a rigorous form, with several hundreds of figures illustrating the exposition. This allows students to develop intuition about topology and geometry without getting bogged down in technical details.

Cohomology operations are at the center of a major area of activity in algebraic topology. This technique for supplementing and enriching the algebraic structure of the cohomology ring has been instrumental to important progress in general homotopy theory and in specific geometric applications. For both theoretical and practical reasons, the formal properties of families of operations have received extensive analysis.
This text focuses on the single most important sort of operations, the Steenrod squares. It constructs these operations, proves their major properties, and provides numerous applications, including several different techniques of homotopy theory useful for computation. In the later chapters, the authors place special emphasis on calculations in the stable range. The text provides an introduction to methods of Serre, Toda, and Adams, and carries out some detailed computations. Prerequisites include a solid background in cohomology theory and some acquaintance with homotopy groups.

Les Elements de mathematique de Nicolas Bourbaki ont pour objet une presentation rigoureuse, systematique et sans prerequis des mathematiques depuis leurs fondements.

Ce livre est le cinquieme du traite; il est consacre aux bases de l analyse fonctionnelle. Il contient en particulier le theoreme de Hahn-Banach et le theoreme de Banach-Steinhaus. Il comprend les chapitres: -1. Espaces vectoriels topologiques sur un corps value; -2. Ensembles convexes et espaces localement convexes; -3. Espaces d applications lineaires continues; -4. La dualite dans les espaces vectoriels topologiques; -5. Espaces hilbertiens (theorie elementaire).

Il contient egalement des notes historiques.

Ce volume a ete publie en 1981."

Les Elements de mathematique de Nicolas Bourbaki ont pour objet une presentation rigoureuse, systematique et sans prerequis des mathematiques depuis leurs fondements.

Ce premier volume du Livre de Topologie generale, troisieme Livre du traite, est consacre aux structures fondamentales en topologie, qui constituent les fondement de l analyse et de la geometrie. Il comprend les chapitres: 1. Structures topologiques; 2. Structures uniformes; 3. Groupes topologiques; 4. Nombres reels.

Il contient egalement des notes historiques.

Ce volume est une reimpression de l edition de 1971. "

Ce deuxieme volume du Livre de Topologie generale decrit de nombreux outils fondamentaux en topologie et en analyse, tels que le theoreme d'Urysohn, le theoreme de Baire ou les espaces polonais. Il comprend les chapitres: 1. Groupes a un parametre; 2. Espaces numeriques et espaces projectifs; 3. Les groupes additifs Rn; 4. Nombres complexes; 5. Utilisation des nombres reels en topologie generale; 6. Espaces fonctionnels."

Topology for Beginners is written for undergraduate students enrolled in a 4-year Bachelor of Science programme. The mathematical content covers a full introductory course on topology. The authors explain why the subject is worth understanding and convince the reader that it is fun and useful. It builds up gradually, explaining why one needs to go to more abstraction, rather than using the 'Definition-Theorem-Proof' method. It does not avoid geometrical descriptions that help the reader to see what is meant, rather than relying on symbol manipulation to obtain results that will be true but in a manner that doesnt develop the intuition of the reader. This book belongs to the genre of modern books that first motivate pictorially and then gently move up the path of mathematical rigour. Where concepts are introduced, or results are proved, the authors also indicate how and where they are used further in Topology, that lead to direct mathematical, natural science, and social science applications. By the end of the book, advanced topics are introduced in a way that makes them intelligible. It also provides many exercises to hone the reader's skills at problem solving in Topology.

This book explores a number of new applications of invariant quasi-finite diffused Borel measures in Polish groups for a solution of various problems stated by famous mathematicians (for example, Carmichael, Erdos, Fremlin, Darji and so on). By using natural Borel embeddings of an infinite-dimensional function space into the standard topological vector space of all real-valued sequences, (endowed with the Tychonoff topology) a new approach for the construction of different translation-invariant quasi-finite diffused Borel measures with suitable properties and for their applications in a solution of various partial differential equations in an entire vector space is proposed.

An easily accessible introduction to over three centuries of innovations in geometry

Praise for the First Edition

." . . a welcome alternative to compartmentalized treatments bound to the old thinking. This clearly written, well-illustrated book supplies sufficient background to be self-contained." --CHOICE

This fully revised new edition offers the most comprehensive coverage of modern geometry currently available at an introductory level. The book strikes a welcome balance between academic rigor and accessibility, providing a complete and cohesive picture of the science with an unparalleled range of topics.

Illustrating modern mathematical topics, "Introduction to Topology and Geometry, Second Edition "discusses introductory topology, algebraic topology, knot theory, the geometry of surfaces, Riemann geometries, fundamental groups, and differential geometry, which opens the doors to a wealth of applications. With its logical, yet flexible, organization, the "Second Edition: "- Explores historical notes interspersed throughout the exposition to provide readers with a feel for how the mathematical disciplines and theorems came into being- Provides exercises ranging from routine to challenging, allowing readers at varying levels of study to master the concepts and methods- Bridges seemingly disparate topics by creating thoughtful and logical connections- Contains coverage on the elements of polytope theory, which acquaints readers with an exposition of modern theory"Introduction to Topology and Geometry, Second Edition "is an excellent introductory text for topology and geometry courses at the upper-undergraduate level. In addition, the book serves as an ideal reference for professionals interested in gaining a deeper understanding of the topic.

Progress in low-dimensional topology has been very quick in the last three decades, leading to the solutions of many difficult problems. Among the earlier highlights of this period was Casson's -invariant that was instrumental in proving the vanishing of the Rohlin invariant of homotopy 3-spheres. The proof of the three-dimensional Poincare conjecture has rendered this application moot but hardly made Casson's contribution less relevant: in fact, a lot of modern day topology, including a multitude of Floer homology theories, can be traced back to his -invariant. The principal goal of this book, now in its second revised edition, remains providing an introduction to the low-dimensional topology and Casson's theory; it also reaches out, when appropriate, to more recent research topics. The book covers some classical material, such as Heegaard splittings, Dehn surgery, and invariants of knots and links. It then proceeds through the Kirby calculus and Rohlin's theorem to Casson's invariant and its applications, and concludes with a brief overview of recent developments. The book will be accessible to graduate students in mathematics and theoretical physics familiar with some elementary algebraic and differential topology, including the fundamental group, basic homology theory, transversality, and Poincare duality on manifolds.

A user-friendly introduction to metric and topological groups

"Topological Groups: An Introduction" provides a self-contained presentation with an emphasis on important families of topological groups. The book uniquely provides a modern and balanced presentation by using metric groups to present a substantive introduction to topics such as duality, while also shedding light on more general results for topological groups.

Filling the need for a broad and accessible introduction to the subject, the book begins with coverage of groups, metric spaces, and topological spaces before introducing topological groups. Since linear spaces, algebras, norms, and determinants are necessary tools for studying topological groups, their basic properties are developed in subsequent chapters. For concreteness, product topologies, quotient topologies, and compact-open topologies are first introduced as metric spaces before their open sets are characterized by topological properties. These metrics, along with invariant metrics, act as excellent stepping stones to the subsequent discussions of the following topics:

Matrix groups

Connectednesss of topological groups

Compact groups

Character groups

Exercises found throughout the book are designed so both novice and advanced readers will be able to work out solutions and move forward at their desired pace. All chapters include a variety of calculations, remarks, and elementary results, which are incorporated into the various examples and exercises.

"Topological Groups: An Introduction" is an excellent book for advanced undergraduate and graduate-level courses on the topic. The book also serves as a valuable resource for professionals working in the fields of mathematics, science, engineering, and physics.

Mathematics has been behind many of humanity's most significant advances in fields as varied as genome sequencing, medical science, space exploration, and computer technology. But those breakthroughs were yesterday. Where will mathematicians lead us tomorrow and can we help shape that destiny? This book assembles carefully selected articles highlighting and explaining cutting-edge research and scholarship in mathematics with an emphasis on three manifolds.

In this book, generally speaking, some properties of bitopological spaces generated by certain non-symmetric functions are studied. These functions, called "probabilistic quasi-pseudo-metrics" and "fuzzy quasi-pseudo-metrics", are generalisations of classical quasi-pseudo metrics. For the sake of completeness as well as for convenience and easy comparison, most of the introductory paragraphs are mainly devoted to fundamental notions and results from the classical -- deterministic or symmetric -- theory.

Students love Schaums--and this new guide will show you why! Graph Theory takes you straight to the heart of graphs. As you study along at your own pace, this study guide shows you step by step how to solve the kind of problems youre going to find on your exams. It gives you hundreds of completely worked problems with full solutions. Hundreds of additional problems let you test your skills, then check the ansers. So if you want to get a firm handle on graph theory--whether to ace your graph course, to supplement a course that uses graphs, or to build a solid basis for future study--theres no better tool than Schaums. This guide makes a wonderful supplement to your class text, but it is so comprehensive that it can even be used alone as a complete graph theory independent study course!

After the development of manifolds and algebraic varieties in the previous century, mathematicians and physicists have continued to advance concepts of space. These books explore various new notions of space, including both formal and conceptual points of view, as presented by leading experts at the New Spaces in Mathematics and Physics workshop held at the Institut Henri Poincare in 2015. They are addressed primarily to mathematicians and mathematical physicists, but also to historians and philosophers of these disciplines.

This book presents fixed point theory, one of the crucial tools in applied mathematics, functional analysis, and topology, which has been used to solve distinct real-world problems in computer science, engineering, and physics. The authors begin with an overview of the extension of metric spaces. Readers are introduced to general fixed-point theorems while comparing and contrasting important and insignificant metric spaces. The book is intended to be self-contained and serves as a unique resource for researchers in various disciplines.

Uncover the Useful Interactions of Fixed Point Theory with Topological Structures Nonlinear Functional Analysis in Banach Spaces and Banach Algebras: Fixed Point Theory under Weak Topology for Nonlinear Operators and Block Operator Matrices with Applications is the first book to tackle the topological fixed point theory for block operator matrices with nonlinear entries in Banach spaces and Banach algebras. The book provides researchers and graduate students with a unified survey of the fundamental principles of fixed point theory in Banach spaces and algebras. The authors present several extensions of Schauder's and Krasnosel'skii's fixed point theorems to the class of weakly compact operators acting on Banach spaces and algebras, particularly on spaces satisfying the Dunford-Pettis property. They also address under which conditions a 2x2 block operator matrix with single- and multi-valued nonlinear entries will have a fixed point. In addition, the book describes applications of fixed point theory to a wide range of diverse equations, including transport equations arising in the kinetic theory of gas, stationary nonlinear biological models, two-dimensional boundary-value problems arising in growing cell populations, and functional systems of integral equations. The book focuses on fixed point results under the weak topology since these problems involve the loss of compactness of mappings and/or the missing geometric and topological structure of their underlying domain.

Specialized as it might be, continuum theory is one of the most intriguing areas in mathematics. However, despite being popular journal fare, few books have thoroughly explored this interesting aspect of topology.

In Topics on Continua, Sergio Macias, one of the field's leading scholars, presents four of his favorite continuum topics: inverse limits, Jones's set function "T," homogenous continua, and "n"-fold hyperspaces, and in doing so, presents the most complete set of theorems and proofs ever contained in a single topology volume. Many of the results presented have previously appeared only in research papers, and some appear here for the first time.

After building the requisite background and exploring the inverse limits of continua, the discussions focus on Professor Jones's set function "T "and continua for which "T" is continuous. An introduction to topological groups and group actions lead to a proof of Effros's Theorem, followed by a presentation of two decomposition theorems. The author then offers an in-depth study of "n"-fold hyperspaces. This includes their general properties, conditions that allow points of "n"-fold symmetric products to be arcwise accessible from their complement, points that arcwise disconnect the "n"-fold hyperspaces, the "n"-fold hyperspaces of graphs, and theorems relating "n"-fold hyperspaces and cones. The concluding chapter presents a series of open questions on each topic discussed in the book.

With more than a decade of teaching experience, Macias is able to put forth exceptionally cogent discussions that not only give beginning mathematicians a strong grounding in continuum theory, but also form an authoritative, single-source guidethrough some of topology's most captivating facets.