Mathematics
Hanul Jeon's user avatar
Hanul Jeon's user avatar
Hanul Jeon's user avatar
Hanul Jeon
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I am Hanul Jeon. I am currently (since 25 August 2021) a doctoral student at Cornell University. Contact me via e-mail or my Twitter account if you want to say something to me. (My e-mail address is available on my website.)

If you find any grammatical errors or suspicious facts from my comments or answers, please let me know.

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All Questions Answers
Score Newest
answer
81
which is larger number? $\sqrt{7}-\sqrt{6}$ or $\sqrt{6}-\sqrt{5}$
Nov 11, 2013
answer
56
Convergence of Ratio Test implies Convergence of the Root Test
Jan 27, 2013
answer
35
The series $\sum_{n=1}^{+\infty}\frac{1}{1^2+2^2+\cdots+n^2}.$
Feb 28, 2013
answer
30
Does $\bigcap_{n=1}^{+\infty}(-\frac{1}{n},\frac{1}{n}) = \varnothing$?
Jan 5, 2013
answer
28
Is the function $ f(x,y)=\frac{xy}{x^{2}+y^{2}}$ where $f(0,0)$ is defined to be $0$ continuous?
Oct 8, 2013
answer
26
Calculating the limit $\lim((n!)^{1/n})$
Mar 10, 2014
question
24
Can we prove the existence of $A\cup B$ without the union axiom?
Sep 19, 2013
answer
21
An inequality $\,\, (1+1/n)^n<3-1/n \,$using mathematical induction
Feb 19, 2013
answer
20
Without the Axiom of Choice, does every infinite field contain a countably infinite subfield?
Nov 8, 2015
answer
19
Every compact metric space is complete
Jan 5, 2014
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13
Translation of "The joy of learning" by Hironaka
12
Is the existence of double complement of a set provable in Intuitionistic ZF?
11
Is axiom of constructibility $V = L$ consistent with Tarski–Grothendieck set theory?
10
Set theory determined by $V_\alpha$ for limit ordinals $\alpha>\omega$
9
Is there a known automatic proof of the independence of the continuum hypothesis?

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