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Dmitry Yarcev

Publications and source records attributed to Dmitry Yarcev.

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Fractional integration for irregular martingales

We suggest two versions of the Hardy--Littlewood--Sobolev inequality for discrete time martingales. In one version, the fractional integration operator is a martingale transform, however, it may vanish if the filtration is excessively irregular; the second version lacks the martingale property while being analytically meaningful for an arbitrary filtration.

math.PR