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Handlebody argument for modifying achiral Lefschetz singularities
Handlebody argument achiral Lefschetz singularities
2010/11/30
In [3] we gave a handlebody description of a broken Lefschetz fibration on CP2 as a ounterexample to Gay and Kirby’s conjecture on the necessity of negative Lefschetz singularities for generalized fib...