Donatella Danielli, Purdue University, West Lafayette, IN.Arshak Petrosyan, Purdue University, West Lafayette, IN.Camelia A. Pop, University of Minnesota, Minneapolis, MN.

• N. Garofalo, Fractional thoughtsM. Allen, Uniqueness for weak solutions of parabolic equations with a fractional time derivativeH. Chang-Lara and O. Savin, Boundary regularity for the free boundary in the one-phase problemP. L. De Napoli and P. R. Stinga, Fractional Laplacians on the sphere, the Minakshisundaram zeta function and semigroupsD. Danielli, A. Petrosyan, and C. A. Pop, Obstacle problems for nonlocal operators

Donatella Danielli, Purdue University, West Lafayette, IN.Arshak Petrosyan, Purdue University, West Lafayette, IN.Camelia A. Pop, University of Minnesota, Minneapolis, MN.

• N. Garofalo, Fractional thoughtsM. Allen, Uniqueness for weak solutions of parabolic equations with a fractional time derivativeH. Chang-Lara and O. Savin, Boundary regularity for the free boundary in the one-phase problemP. L. De Napoli and P. R. Stinga, Fractional Laplacians on the sphere, the Minakshisundaram zeta function and semigroupsD. Danielli, A. Petrosyan, and C. A. Pop, Obstacle problems for nonlocal operators

Donatella Danielli, Purdue University, West Lafayette, IN.Arshak Petrosyan, Purdue University, West Lafayette, IN.Camelia A. Pop, University of Minnesota, Minneapolis, MN.

• N. Garofalo, Fractional thoughtsM. Allen, Uniqueness for weak solutions of parabolic equations with a fractional time derivativeH. Chang-Lara and O. Savin, Boundary regularity for the free boundary in the one-phase problemP. L. De Napoli and P. R. Stinga, Fractional Laplacians on the sphere, the Minakshisundaram zeta function and semigroupsD. Danielli, A. Petrosyan, and C. A. Pop, Obstacle problems for nonlocal operators