Yi Yan

· Operator theory on analytic function spaces

· Douglas algebras and related uniform algebras

Papers and preprints

1. Characterizations of Hankel operators in the essential commutant of quasicontinuous Toeplitz operators. (submitted)
2. Toeplitz-composition algebras generated by piecewise quasicontinuous functions and a linear fractional non-automorphism fixing a boundary point. (submitted)
3. Multiplication operators on Hardy and weighted Bergman spaces over planar regions. (Banach J. Math. Anal., Vol. 14, 2020)
4. On compact perturbations of Hankel operators and commutators of Toeplitz and Hankel operators. (Integr. Equ. Oper. Theory, Vol. 92, 2020)
5. When do cylinder sigma-algebras equal Borel sigma-algebras? (Stat. Probab. Letters, Vol. 78, 2008)

Spring 2019, MATH 125

Fall 2019, MATH 116

Spring 2020, MATH 116

Fall 2020, MATH 116