Question: Which Soviet mathematician was interrogated by the KGB as a result of his or her work, Sergei Novikov or Bella Subbotovskaya?
Sentence (from "Normal invariant"): If the dimension of "X" is formula_1 5 there is then only the algebraic topology surgery obstruction due to C. T. C. Wall to "X" actually being homotopy equivalent to a closed manifold.
Relevant evidence: No