COBORDISM THEORY
COBORDISM THEORY
Two manifolds are cobordant if, and only if, one can be transformed to the other by a sequence of surgeries. This chapter discusses the Pontrjagin-Thom transversality isomorphism between the cobordism groups and homotopy groups. Computations of framed, unoriented, and oriented cobordism are also mentioned. The signature is the basic cobordism invariant.
Keywords: transversality, framed cobordism, unoriented cobordism, oriented cobordism, signature
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