| http://www.w3.org/ns/prov#value | - If u is divergence free and periodic in Rd, then for any ?? ??? (0,1),there exists a constant c = c(??,d) such that????u?L??? ? c????L????1 + ln+?|??|??????L?????where ?? = ??? ?? u.The lemma is a standard fact about singular integral operators, and we providea proof in Appendix B for completeness.Theorem 3.5.
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