# Mathematics Colloquia and Seminars

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### Convexifying Polygons in R^2

**Geometry/Topology**

Speaker: | Brad Ballinger, UC Davis |

Location: | 693 Kerr |

Start time: | Wed, Apr 24 2002, 4:10PM |

We start with a polygon in the plane which we would like to make convex while preserving side lengths. There are several different systems of allowable moves, but in general we seek:

1. A proof that (some large class of) polygons may be convexified 2. An efficient algorithm for the process

We will see a few versions of this problem, some of their solutions, and a surprising picture or two.