Does there exist a fibration of genus two over P^1 with only 3 singular fibres but two are semi-stable fibers for algebraic surfaces?

We will work over the complex numbers C.

there exist a fibration of genus two over P^1 with only 3 singular fibres but one is semi-stable fiber.

there not exist a fibration of genus two over P^1 with only 3 singular fibres but three are all semi-stable fibers.

flag	asked May 22 2011 at 12:53 gongcheng 51●1

See this paper: arxiv.org/pdf/alg-geom/9411002. – J.C. Ottem May 22 2011 at 22:38

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