Displaying similar documents to “Infinitely many universally tight contact manifolds with trivial Ozsváth-Szabó contact invariants.”

K-theory, flat bundles and the Borel classes

Bjørn Jahren (1999)

Fundamenta Mathematicae

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Using Hausmann and Vogel's homology sphere bundle interpretation of algebraic K-theory, we construct K-theory invariants by a theory of characteristic classes for flat bundles. It is shown that the Borel classes are detected this way, as well as the rational K-theory of integer group rings of finite groups.

The cobordism of Real manifolds

Po Hu (1999)

Fundamenta Mathematicae

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We calculate completely the Real cobordism groups, introduced by Landweber and Fujii, in terms of homotopy groups of known spectra.