In mathematics, a Novikov–Shubin invariant, introduced by Sergei Novikov and Mikhail Shubin (1986), is an invariant of a compact Riemannian manifold related...

Novikov–Shubin invariant Novikov ring List of second-generation Mathematicians His first name is also romanized as Serguei. "Serguei Novikov". University...

a fellow of the American Mathematical Society. Novikov–Shubin invariant Mikhail Aleksandrovich Shubin death notice "List of Fellows of the American Mathematical...

of the index, and asked for a formula for it by means of topological invariants. Some of the motivating examples included the Riemann–Roch theorem and...