Mathematics
Clement Yung's user avatar
Clement Yung's user avatar
Clement Yung's user avatar
Clement Yung
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About

Pure mathematics graduate student hoping to enter academia. My research interests are set theory and Ramsey theory.

I completed most exercises in Jech's Set Theory from Chapter 1 to Chapter 24, and the suggested solutions can be found on my website. Usual disclaimers apply.

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All Questions Answers
Score Newest
answer
15
Proving that $f'(x)\le f(x), \forall x\in \mathbb{R}$
Dec 21, 2019
question
11
Can every functional equation be solved or proved unsolvable?
Dec 1, 2021
answer
9
$\int_0^1f(x) dx =0$, $\int_0^1xf(x) dx =0$. How to show that f has at least two zeros?
Jun 27, 2020
answer
7
Proving that the set of rational numbers between 0 and 1 is disconnected.
Oct 8, 2019
answer
7
In which case these integrals are equal?
Jan 10, 2020
answer
7
How can I turn a $0^0$ form into a $\frac{\infty}{\infty}$ or $\frac{0}{0}$ form?
Jan 12, 2020
answer
7
Why does Stolz- Cesaro fail to evaluate the limit of $\dfrac{n + n^2 + n^3 + n^4 + \ldots + n^n}{1^n + 2^n + 3^n + 4^n + \ldots +n^n}$,
May 28, 2020
answer
6
In what sense are proofs that rely on the Law of the Excluded Middle really proofs?
Feb 23
question
6
Unbounded set in $V[G]$ has an unbounded subset in $V$?
Aug 18, 2021
answer
6
The definition of cofinality of an ordinal
Mar 17, 2022
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18
Theorems in set theory that use computability theory tools, and vice versa
14
Is "There exists an unbounded non-measurable set but no bounded non-measurable set" consistent with $\mathsf{ZF}$?
14
Can ($X^I$, product topology) and ($X^I$, box topology) be homeomorphic for some nontrivial $X$ and infinite $I$?
9
Why is choice needed in Ellis' Lemma?
7
Models with fixed cardinality of non-Lebesgue measurable sets

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