Download A Topological Chern-Weil Theory by Anthony V. Phillips PDF

By Anthony V. Phillips

ISBN-10: 0821825666

ISBN-13: 9780821825662

This paintings develops a topological analogue of the classical Chern-Weil thought as a mode for computing the attribute sessions of vital bundles whose structural workforce isn't really unavoidably a Lie workforce, yet just a cohomologically finite topological team. Substitutes for the instruments of differential geometry, similar to the relationship and curvature types, are taken from algebraic topology, utilizing paintings of Adams, Brown, Eilenberg-Moore, Milgram, Milnor, and Stasheff. the result's a synthesis of the algebraic-topological and differential-geometric techniques to attribute classes.In distinction to the 1st procedure, particular cocycles are used, so that it will spotlight the impression of neighborhood geometry on international topology. unlike the second one, calculations are conducted on the small scale instead of the infinitesimal; in truth, this paintings will be considered as a scientific extension of the remark that curvature is the infinitesimal type of the illness in parallel translation round a rectangle. This e-book will be used as a textual content for a complicated graduate path in algebraic topology.

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Extra resources for A Topological Chern-Weil Theory

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7r])- x (1) (r) = J0f (2) x (r) = dv in case r = 0, dim 70 = 3, otherwise; ' s £ /o /o Tr(W°(Y0(*o)) • ^[(s^dsods1 in case r = 1, dim 70 = dim7x = 1, 0 otherwise. A straightforward calculation shows that d\ = 7^*5^, where F is the 4-cocycle on B* defined by ra-yi 1 1^} of x such that ' ~~ ^ 0 otherwise. We have not been able to do this.

F. Adams [1] and E. H. Brown [5], and defined as follows. (See [31] for the relation between these two concepts and other concepts in geometry and topology). We start with a finite simplicial complex A and a partial ordering o of its vertices. For notational convenience we will embed o in a total ordering, and renumber the vertices 0,1,2,... accordingly. ) We repeat here some material from [31]. 1 A parallel transport function over a locally ordered simplicial complex A consists of a family V of maps of cubes into G, one Va: c^"1 —> G for each r-simplex a of A , r > 1, such that, for every a =< i 0 , .

A a;. For this we must first define products of elementary Tg*-valued cochains and develop some of their properties. 52 ANTHONY V. PHILLIPS and DAVID A. STONE P r o d u c t s of e l e m e n t a ry Tg*-valued cochains. *), in order to define a cup product we need a comultiplication V: A* —> A* ® A* and a multiplication fx: B* ® B* —» B*. We can then define a U /3 from the diagram to be the composite A, Z A, ® A, " ^ 5 , ® 5 , A 5* . We shall define a comultiplication in C* and a geometric product operation on operators on C* which, in the absence of any natural multiplication on Tg*, is sufficient for our purposes.

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