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AnalysisStudent0414
  • Member for 10 years, 8 months
  • Last seen this week
22 votes
Accepted

Proving the kernel is a normal subgroup.

20 votes
Accepted

How big is a particular n!?

18 votes

Is there an identity for cos(ab)?

14 votes

"What if" math joke: the derivative of $\ln(x)^e$

14 votes
Accepted

Does there exist a $n \in \mathbb{N},\; n>1$ such that the number of groups of order $n$ equals $n$?

9 votes

What exactly is the paradox in Zeno's paradox?

8 votes

Intuition behind a zero derivative

7 votes
Accepted

In modular representation theory, what is a block?

7 votes
Accepted

Inverse of any element in a group of matrices

7 votes
Accepted

convergence of $\sum_1^ \infty n^2 e^{- \sqrt{n} }$

7 votes
Accepted

$a^4+b^2+c^2=2014$

6 votes

Why does $\sqrt{n\sqrt{n\sqrt{n \ldots}}} = n$?

6 votes
Accepted

If $\tan x$ is not a differentiable function then why does its differentiation $\sec^2(x)$ exists?

6 votes
Accepted

Let $N$ be a normal subgroup of a finite group $G$

6 votes
Accepted

Do there exist finite non-cyclic groups $H$ and $K$, satisfying the specific condition?

5 votes

Endomorphisms of $\mathbb Z_4$

5 votes
Accepted

Expressing a 3-cycle in $S_5$ as a product of two $5$-cycles.

5 votes

Why can't $a=\theta-\sin(\theta)$ be solved for $\theta$ in terms of $a$ in closed form?

5 votes
Accepted

Confusion on the definition of accumulation points

5 votes

Check my proof. Is this a group?

5 votes
Accepted

Need help proving $C_{S_4}(V_4)=V_4$.

5 votes
Accepted

How do you evaluate this summation: $S=\sum\limits_{r=0}^{15} (-1)^r \frac{\binom{15}{r}}{\binom{r+3}{r}}$

5 votes

Maxima and Minima: $y = x^4$

5 votes
Accepted

Why does this sphere volume proof work?

4 votes

Is $\alpha$ algebraic or not?

4 votes

Closed-form expression for $\log(x) + \log(x^2) + \cdots + \log(x^n)$

4 votes
Accepted

How to defend Mathematics from "ignorant" people?

4 votes

graphic of $(-2)^x$, domain and range

4 votes

$\left(A\times B\right)^n=A^n\times B^n$?

4 votes

Why $a^{2}+b^{2}\neq c^{2}$ when $a=b=c=1$ doesn't violate Pythagoras' Theorem?

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