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Mathematics
Drinzjeng Triang's user avatar
Drinzjeng Triang's user avatar
Drinzjeng Triang's user avatar
Drinzjeng Triang
  • Member for 4 years, 11 months
  • Last seen this week
  • Dai-qruan-siengx, Triung-ghrua Njin-mjin gyungh-ghua-kuok
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The language used in my name & location is the Romanisation of 廣韵, a kind of ancient Chinese.

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question
15
When $(-)+M$ sends closed sets to closed sets?
May 28, 2023
question
9
Happy New Year! Suppose $H''(r)-aH'(r)=0$ and $H'(0)=\frac{1}{p^2}$. Find the "special solution" for $H'(0)=\frac{H'(0)}{a}\cdot(1+\frac{N}{Y}e^w)$. [closed]
Jan 1, 2020
answer
7
Evaluation of $\lim_{n\rightarrow \infty}(n+\frac{1}{n})e^{\frac{1}{n}}-n$
Jan 1, 2020
question
7
Rational matrix whose power is an integer matrix
Jul 10
question
4
Maximum number of $\pm 1$ valued vectors with pairwise negative inner product
Aug 8, 2022
question
3
How many similar matrices does one given matrix have? [closed]
Dec 27, 2019
question
3
$\lim_{n\to\infty}\{\frac{3}{n}\sum_{k=1}^n[1+8\sin^2(\frac{k\pi}{n})]^{-1}\}^{2^n}$
Dec 29, 2019
question
3
Does $L^1(\mathbb R)$ implies $\limsup_{n\to\infty} f(nx)<\infty$ for almost every $x\in\mathbb R$?
Jun 1, 2021
answer
3
conformal maps between annulus
Nov 22, 2020
question
2
Maximum determinant of a $(0,1)$-matrix [duplicate]
Dec 29, 2019