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William Ballinger's user avatar
William Ballinger's user avatar
William Ballinger
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I'm a first year grad at Princeton interested in low dimensional topology and combinatorics.

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12
Does a certain points and lines configuration exist?
Jul 21, 2017
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10
If $M$ is contractible manifold and $X\subset \partial M$, does the cone over $X$ embed in $M$?
Sep 1, 2022
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4
What are the possible linking matrices of a quasi-positive link?
May 10, 2019
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2
Relating the cardinalities of rings and their spectra
May 11, 2013
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2
Inequality of Partial Taylor Series
Apr 12, 2013
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2
Presenting 3-manifolds by planar graphs
Feb 20, 2019
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2
Unusual skein relation in HOMFLY polynomial
May 28, 2020
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138
What is $\gcd(0,0)$?
13
How sensitive is the Yoneda lemma to set-theoretic subtleties?
13
Why didn't King Ferdinand take over Portugal during the Spanish Reconquista?
10
On Similarities and Differences Between Right and Left Modules over a Ring
9
How to solve this contradiction?