Positivity for equations involving polyharmonic operators with Dirichlet boundary conditions Hans-Christoph GrunauGuido Sweers Pages: 589 - 626
Embeddings of unitary highest weight representations and generalized Dirac operators Thomas J. EnrightNolan R. Wallach Pages: 627 - 646
Flips of semi-stable 4-folds whose degenerate fibers are unions of Cartier divisors which are terminal factorial 3-folds Yasuyuki Kachi Pages: 647 - 662
Critical exponents for the blow-up of solutions with sign changes in a semilinear parabolic equation Noriko MizoguchiEiji Yanagida Pages: 663 - 675
Borcherds superalgebras and a monstrous Lie superalgebra Seok-Jin KangMyung-Hwan Kim Pages: 677 - 694