Counterexamples to the Gaussian vs. MZ derivatives Conjecture

J. Marshall Ash, Stefan Catoiu

J. Marcinkiewicz and A. Zygmund proved in 1936 that the special $n$-th generalized Riemann derivative ${}_2{D}_{n}f(x)$ with nodes $0,1,2,2^2,\dots ,2^{n-1}$, is equivalent to the $n$…