Stratified Morse Theory with Tangential Conditions
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Submission date: 02. Oct. 2003
MSC-Numbers: 58A35, 37B30, 57R70, 55N10
Keywords and phrases: stratified sets, morse-conley indices, critical points and critical submanifolds, singular homology theory
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Our objective is to develop a stratified Morse theory with tangential conditions. We define a continuous strata-wise smooth Morse function on an abstract stratified space by using control conditions and radiality assumptions on the gradient vector field. For critical points of a Morse function one can show that the local unstable set is a manifold and the local stable set is itself an abstract stratified space. We also give a normal form for the gradient dynamics in the neighborhood of critical points. For a stratified Morse pair which satisfies the generic Morse-Smale condition we can build the Morse-Witten complex and show that its homology is equivalent to the singular homology of the space.