Multisections of 4-manifolds

Author:

Islambouli Gabriel,Naylor Patrick

Abstract

We introduce multisections of smooth, closed 4-manifolds, which generalize trisections to decompositions with more than three pieces. This decomposition describes an arbitrary smooth, closed 4-manifold as a sequence of cut systems on a surface. We show how to carry out many smooth cut and paste operations in terms of these cut systems. In particular, we show how to implement a cork twist, whereby we show that an arbitrary exotic pair of smooth 4-manifolds admit 4-sections differing only by one cut system. By carrying out fiber sums and log transforms, we also show that the elliptic fibrations E ( n ) p , q E(n)_{p,q} all admit genus 3 3 multisections, and draw explicit diagrams for these manifolds.

Publisher

American Mathematical Society (AMS)

Subject

Applied Mathematics,General Mathematics

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