Dan Petersen
Apparently, this user prefers to keep an air of mystery about them.
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Stockholm University

Member for 9 years, 5 months

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Last seen Apr 15 at 10:51
Communities (9)
Top Network Posts
 188 Why do mathematicians use singleletter variables?
 72 Examples where it's useful to know that a mathematical object belongs to some family of objects
 65 Structures that turn out to exhibit a symmetry even though their definition doesn't
 65 Can the fundamental group of any manifold be realized as the fund grp of a finite space?
 42 How to prove that a polynomial of degree $n$ has at most $n$ roots?
 41 How did the refereeing system of Gösta MittagLeffler's Acta Mathematica function from 1882 to (about) 1918?
 40 Ringtheoretic characterization of open affines?
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