On Q-conic bundles, II
Mori, Shigefumi · Prokhorov, Yuri
Original · EN
A Q-conic bundle germ is a proper morphism from a threefold with only terminal singularities to the germ (Z o) of a normal surface such that fibers are connected and the anti-canonical divisor is relatively ample. We obtain the complete classification of Q-conic bundle germs when the base surface germ is singular. This is a generalization of our previous paper math/0603736, which further assumed that the fiber over o is irreducible.
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