Mathematics
Lee Mosher's user avatar
Lee Mosher's user avatar
Lee Mosher's user avatar
Lee Mosher
  • Member for 11 years
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  • Rutgers University, Newark
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Mathematics professor at Rutgers University in Newark. Researcher in Topology, Geometry, and Geometric Group Theory. Currently specializing in the large scale geometry of $Out(F_n)$, the outer automorphism group of a free group of finite rank $n$.

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39
Why is Rationals w.r.t addition not an Isomorphism to Rationals w.r.t. multiplication?
May 22, 2015
answer
36
Why are primes considered to be the "building blocks" of the integers?
Jan 11, 2015
answer
33
Is formal truth in mathematical logic a generalization of everyday, intuitive truth?
May 12, 2016
answer
33
Repeatedly taking differences on a polynomial yields the factorial of its degree?
Jun 12, 2017
answer
31
Are there surfaces with more than two sides?
Apr 12, 2014
answer
30
Why is Banach–Tarski's paradox so interesting?
Sep 28, 2014
answer
28
The integral of a function on manifold and differential form
Jun 17, 2016
answer
27
When can a homomorphism be determined entirely by its generators
Aug 19, 2015
answer
25
What is the correct way to think about quotient sets and equivalence relations?
Jul 26, 2021
answer
21
Why is it the (group) morphisms that matter?
Jun 8, 2020
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Is it a "rule" of Math Stack Exchange that when asking a question, it's **never** good just to state the question?
14
Non-experts closing questions
13
Is "playing dumb" considered un-helpful?
10
Curious about exceptionally timely answers
4
What was wrong with my answer to "what does $0 \ne 1$ mean"?
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53
When has discrete understanding preceded continuous?
52
What is the point of teaching variance?
41
Conjugacy classes of $\mathrm{SL}_2(\mathbb{Z})$
40
In the United States, how do you get car insurance (auto liability) which is valid no matter what car you are driving?
37
Connected sum of topological manifolds

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