Bogdan Bojarski and Andrzej Weber


Riemann-Hilbert problem: K-theory and bordisms

We present classical and generalized Riemann-Hilbert problem in several context arising
from K-theory and bordism theory. The language of Fredholm pairs turns out to be useful
and unavoidable. We propose an abstract formulation of a notion of bordism in the context
of Hilbert spaces equipped with splittings.