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Fundamental groups of iterated blowups Tadeusz Januszkiewicz

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Fundamental groups of iterated blowups Tadeusz Januszkiewicz

Abstract: There is the classical blowup of a point construction in algebraic geom- etry. In certain sense it is analogous to taking the complement of a point.

I will discuss spaces (and groups) which come from the iterated blowup con- struction performed on subspace arrangements, especially their relation to CAT0 cubical complexes.

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