On Manin's conjecture for singular del Pezzo surfaces of degree four, I
On Manin's conjecture for singular del Pezzo surfaces of degree four, I
This paper contains a proof of the Manin conjecture for the singular del Pezzo surface X : x0x1 − x2 = x0x4 − x1x2 + x3 = 0, of degree four. In fact, if U ⊂ X is the open subset formed by deleting the unique line from X, and …