Question: Are Vladimir Arnold and Anatoly Fomenko both Soviet mathematicians?
Sentence (from "Gudkov's conjecture"): In real algebraic geometry, Gudkov's conjecture, also called Gudkov’s congruence, (named after D. A. Gudkov) was a conjecture, and is now a theorem, which states that "a M-curve* of even degree "2d" obeys "p" – "n" ≡ "d" (mod 8)", where "p" is the number of positive ovals and "n" the number of negative ovals of the M-curve.
Relevant evidence: No