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Mathematics
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TheLast Cipher
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I currently self-study maths. Helpful people at stackexchange are essentially my valued teachers.

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11
Prove that the function $\sqrt x$ is uniformly continuous on $\{x\in \mathbb{R} | x \ge 0\}$.
Jul 14, 2018
5
Correct non-inductive proof of Euler's Formula $|V|+|F|-|E|=2$?
Apr 18, 2019
4
Prove or disprove: If $(x_n)$ is a Cauchy sequence in $X$ and $f$ is a continuous function on $X$, then $(f(x_n))$ is a Cauchy sequence.
Jul 18, 2018
4
How are formal definitions in mathematics created/discovered?
Aug 17, 2017
4
The order of $Hg\in G/H$ divides the order of $g\in G$ when $H$ is normal in $G$ and $G$ is finite.
Sep 25, 2018
4
Notation: for strongly-regular graph $(v,k;\lambda, \mu)$, how to interpret "$k(k-\lambda-1)$" and "$\mu(v-k-1)$"?
Apr 9, 2019
4
Solving $e^{2z}+e^z +1=0$
Oct 26, 2018
3
Switching "For all $\epsilon$, there exists $\delta$, ..." to "For all $\delta$, there exists $\epsilon$, ..." in the definition of function's limit [duplicate]
Jun 11, 2018
3
Every graph G containing a cycle satisfies g(G)≤2d+1.
Apr 11, 2017
3
Is this definition of a complete bipartite graph correct?
Apr 16, 2017
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Fundamental idea on proving God's existence with science