Por Daniel Spector (National Chiao Tung University in Hsinchu, Taiwan).

Por Antonio Córdoba (Universidad Autónoma de Madrid).

Abstract: On his doctoral thesis about trigonometric series, Bernard Riemann introduced a notion of generalized second derivative which was relevant to prove his uniqueness theorem of trigonometric expansions. The purpose of this talk is to characterize locally minimal surfaces in terms of those generalized harmonic functions.

Por Alessandro Zilio (LJLL - Paris Diderot / University of Paris).

Por Francesca Dalbono (Università degli Studi di Palermo).

Por Dietmar Kröner (Albert-Ludwig-Universität Freiburg).

Por Hugo Beirão da Veiga (CMAFcIO e Università di Pisa).

Por José Oliveira (Universidade do Minho).

Por Vladimir I. Man'ko (Lebedev Institute, Russian Academy of Sciences).

Por José Oliveira (Universidade do Minho).

Por Juha Videman (CAMGSD, Instituto Superior Técnico).

Abstract: Stabilization of mixed finite element methods for saddle point problems is a well-established technique that allows one to use finite element spaces that do not satisfy the Babuska-Brezzi condition. They were introduced and analysed in 80’s by Hughes, Franca, Brezzi, Pitkäranta and others. The analysis has, however, suffered from the fact that full regularity of the exact solution needs to be assumed.