Presidential affair

From left, at ribbon-cutting for the new Skirball performing arts center in New York University’s Kimmel Center for University Life on Washington Sq. S. last week, N.Y.U. President John Sexton; former N.Y.U. President L. Jay Oliva; Martin Blackman; Kimmel’s architect, Kevin Roche; and former N.Y.U. President Emeritus John Brademas