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math.FA2021
Poincaré Inequality Meets Brezis--Van Schaftingen--Yung Formula on Metric Measure Spaces
Feng Dai, Xiaosheng Lin, Dachun Yang +2
Let be a metric measure space of homogeneous type which supports a certain Poincaré inequality. Denote by the symbol $\mathcal{C}_{\mathrm{c}}^\ast(\mathcal{X…
math.FA2021★ 2 cited
Compactness Characterizations of Commutators on Ball Banach Function Spaces
Jin Tao, Dachun Yang, Wen Yuan +1
Let be a ball Banach function space on . Let be a Lipschitz function on the unit sphere of ,which is homogeneous of degree zero and has mean v…