Mathematics – Geometric Topology
Scientific paper
2011-06-17
Mathematics
Geometric Topology
Major revision: more general definitions and results; 15 pages, 16 figures
Scientific paper
In analogy with the vector bundle theory we define universal and strongly universal Lefschetz fibrations over bounded surfaces. After giving a characterization of these fibrations we construct very special strongly universal Lefschetz fibrations when the fiber is the torus or an orientable surface with connected boundary and the base surface is the disk. As a by-product we also get some immersion results for 4-dimensional 2-handlebodies.
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