>>155679
I asked it following things before trying to solve
>Start only from Navier–Stokes and basic calculus.>Identify exactly what must be bounded to prevent the blowup.>Invent a candidate new inequality, rather than quoting an existing regularity criterion.>Try to prove it from scratch.>Attack our own proof looking for a counterexample or hidden assumption.>If it survives, see whether it closes the global regularity argument.
