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Differentiation at large scales October 24, 2011 (04:10PM PDT - 05:10PM PDT)
Location: UC Berkeley, 60 Evans Hall
Speaker(s) Irine Peng
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The usual notion of differentiation is a way of understanding the infinitesimal behaviour of a map, i.e. the map restricted to ever decreasing scales. However there are elements of the differentiation process that make sense at larger scales as well. I will discuss the utility of this view point in the work of Eskin-Fisher-Whyte on quasi-isometries of the 3 dimensional solvable group and some subsequent generalization.

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