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Dongryul Kim's user avatar
Dongryul Kim's user avatar
Dongryul Kim's user avatar
Dongryul Kim
  • Member for 11 years, 5 months
  • Last seen more than a month ago
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Top posts
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question
32
Minimal number of intersections in a convex $n$-gon?
Jul 26, 2015
answer
15
Endomorphisms of the p-adic group $(\mathbb Z_p,+)$
Jan 8, 2019
answer
13
A question about simple closed curves in 3-dimensional Euclidean space
Oct 4, 2015
question
11
Number of real roots of an exponential polynomial
Jan 3, 2016
answer
10
Deceptive linear algebra problem
Aug 2, 2015
answer
10
Periodic tilings of the plane by regular polygons
Mar 4, 2017
answer
7
Infected square
Nov 18, 2014
answer
6
2-adic valuation of odd harmonic sums
Jul 17, 2016
answer
6
Small set such that $\{1 , \ldots , n\} \cdot A = \mathbb{Z} / p \mathbb{Z}$
Jul 18, 2016
answer
5
The growth of a subset of a group
Aug 31, 2015
Top network posts
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9
Looking for an intuitive explanation why the row rank is equal to the column rank for a matrix
7
Nested Radicals with multiplication
6
Elementary divisors theorem for Dedekind domains (Exercise in Lang's Algebra)
6
Maximizing curious symmetric function from simple combinatorics
5
Verification of binomial coefficient congruence $\binom{jp}{j}\equiv j\binom{p}{j}\pmod{p^2}$