IBS-KAIST seminar

    Speaker Yum-Tong Siu Harvard University For sums of squares of real vector fields, Hörmander linked subelliptic estimates to the spanning property of iterated Lie brackets of vector fields. Kohn studied the more complicated analogue of subelliptic ​∂​​​​ estimates for weakly pseudoconvex domains, with vector-valued unknowns. In the weak-solution approach to solving the ∂​​​ …