Resumen de On Manin's conjecture for singular del Pezzo surfaces of degree four, II
Régis de la Bretèche, T. D. Browning
This paper establishes the Manin conjecture for a certain non-split singular del Pezzo surface of degree four . In fact, if U ? X is the open subset formed by deleting the lines from X, and H is the usual projective height function on , then the height zeta function is analytically continued to the half-plane e(s) > 17/20.
