3 papers
math.FA2026
Compactness and Its Applications of Sobolev Spaces Associated with Ball Banach Function Spaces
Xiaosheng Lin, Dachun Yang, Wen Yuan +1
Let be a bounded Lipschitz domain in , and be a ball Banach function space on In this article, under some mild assu…
math.AP2026
A Counterexample to the Necessity of the Vanishing Carleson Condition for VMO Poisson Kernels
Xiaosheng Lin, Dachun Yang, Sibei Yang +2
In [Problem 3.2.23, CBMS Regional Conference Series in Mathematics 83, 1994], Kenig asked whether the vanishing Carleson condition is the necessary and sufficient for the logarithm…
math.AP2026
A Counterexample to Kenig's Interpolation Problem for Sobolev Spaces with Zero Boundary Conditions
Xiaosheng Lin, Dachun Yang, Sibei Yang +2
Let . In this article, we show that there exists a bounded domain such that, for any given $s\in(1,2)\setminus\{\frac32\…