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BOOK REVIEWS 193 References 1. Guckenheimer, J. and Holmes, P.: Nonlinear Oscillations, Dynamical Systems and Bifurcations of Vector Fields, Applied Math. Sciences 42, Springer, Heidelberg, 1983. 2. Henry, D.: Geometric Theory of Semitinear Parabolic Equations, Lecture Notes in Mathematics 840, Springer, New York, 1981. 3. Chow, S.-N. and Hale, J. (eds): Dynamics of lnfinite Dimensional Systems, NATO ASI Series, Series F: Computer and Systems Science 37, Springer, Heidelberg, 1987. Comenius University, PAVOL BRUNOVSKY Bratistava, Czechoslovakia John Roe: Elliptic Operators, Topoloyy and Asymptotic Methods, Pitman Research Notes in Mathematics No. 179, 1988, 184pp. The theory of elliptic operators on manifolds is enormously useful in topology, physics, and representation theory. This theory relates topological invariants of differential structures on manifolds on the one hand, to analytical invariants on the other. The oldest example goes back to C. F. Gauss and O. Bonnet for closed oriented Riemannian surfaces. The Gauss-Bonnet theorem states that z(M) = fM where ;~(M)= E(-l)idimHi(M,~) is the Euler characteristic of a surface M, Hi(M, I~) is the ith de Rham cohomology group of M, and E~ is the curvature. We may interpret this theorem as saying that the Euler characteristic of the de Rham complex is given by
Acta Applicandae Mathematicae – Springer Journals
Published: May 1, 2004
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