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Mathematics
Brevan Ellefsen's user avatar
Brevan Ellefsen's user avatar
Brevan Ellefsen's user avatar
Brevan Ellefsen
  • Member for 10 years, 5 months
  • Last seen this week
  • Urbana, IL, USA
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About

PhD candidate working on low dimensional topology and dynamics, with an emphasis on 3-manifolds.

I can be reached at [email protected]

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Top posts

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64
Is it possible to represent every irrational number as a (limit of) an infinite sum of rational numbers?
Oct 6, 2015
32
Where is the absolute value when computing antiderivatives?
Feb 8, 2017
28
Odd Number of Cats?
Oct 3, 2016
25
Factorial question: number of trailing zeroes in 125!
Feb 22, 2016
21
Sheaf Theory for Complex Analysis
May 5, 2018
19
Is there a way to insert Log base-something into Google Calculator?
Mar 24, 2017
19
False Proof that $\sqrt{4}$ is Irrational
Apr 18, 2016
15
Proof of identity for $\pi$: $\frac{\pi}{3} = \frac{2}{\sqrt{2+\sqrt{3}}}\frac{2}{\sqrt{2+\sqrt{2+\sqrt{3}}}}\cdots$
Mar 14, 2019
14
What is the minimum area of a rectangle containing all circles of radius $1/n$?
Jan 14, 2023
13
Why does Wolfram Alpha say that $\infty^\infty$ results in "complex infinity"?
Dec 31, 2016

Top Meta posts

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Is simple mathematics for learners allowed here?
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Mathematics new site theme is live
7
Can We Have Links in Tags?
6
I feel mathematically inadequate for this site. What level are the majority of questions?
3
How do I go about determining if downvotes are serial?

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11
Why do we care about multiple proofs of the same theorem?