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- W2238831511 abstract "We explicitly construct genus-2 Lefschetz fibrations whose total spaces are minimal symplectic 4-manifolds homeomorphic to complex rational surfaces CP^2 # p (-CP^2) for p=7, 8, 9, and to 3 CP^2 #q (-CP^2) for q =12,...,19. Complementarily, we prove that there are no minimal genus-2 Lefschetz fibrations whose total spaces are homeomorphic to any other simply-connected 4-manifold with b^+ at most 3, with one possible exception when b^+=3. Meanwhile, we produce positive Dehn twist factorizations for several new genus-2 Lefschetz fibrations with small number of critical points, including the smallest possible example, which follow from a reverse engineering procedure we introduce for this setting. We also derive exotic minimal symplectic 4-manifolds in the homeomorphism classes of CP^2 # 4 (-CP^2) and 3 CP^2 # 6 (-CP^2) from small Lefschetz fibrations over surfaces of higher genera." @default.
- W2238831511 created "2016-06-24" @default.
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- W2238831511 date "2015-10-01" @default.
- W2238831511 modified "2023-09-27" @default.
- W2238831511 title "Small Lefschetz fibrations and exotic 4-manifolds" @default.
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