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PRODID:-//Microsoft Corporation//Outlook 9.0 MIMEDIR//EN
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DTSTART:20170914T154000
DTEND:20170914T163000
LOCATION:North Hall 276
UID:13147AE4-085D-43BE-B4D8-4646F35CEDDB@cms.calvin.edu
DESCRIPTION;ENCODING=QUOTED-PRINTABLE:If we stretch or squeeze a surface, the topology doesn't change, but the local curvature certainly does. So "topology doesn't care about curvature," and yet there is a deep relation between the two, expressed in the remarkable Gauss-Bonnet theorem. I will explain what geometers mean when they talk about the curvature of a surface, what topologists mean by the "genus" of a surface, and how Gauss-Bonnet connects these two quantities.=0D=0A Refreshments precede the talk at 3:30 p.m. in NH 282.
SUMMARY;ENCODING=QUOTED-PRINTABLE:Mathematics and Statistics Colloquium
PRIORITY:1
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