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MyUserIsThis
  • Member for 11 years, 4 months
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18 votes
Accepted

What is this math symbol called?

15 votes
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Scalar triple product - why equivalent to determinant?

10 votes
Accepted

$A$ closed in $Y$ and $Y$ closed in $X$ , then $A$ is closed in $X$

9 votes

proving the Klein 4 group is abelian

7 votes
Accepted

How can i solve this separable differential equation?

6 votes
Accepted

Mathematical notation for computer science

5 votes
Accepted

Describe all graphs without a path of length 3

5 votes
Accepted

Differentiating $ y= xe^{1\over x} $

4 votes
Accepted

Michelson-Morley Experiment

4 votes

How accurate are most representations of pi?

4 votes

How to solve $|x-5|=|2x+6|-1$?

4 votes

Integrate $\frac{\mathrm d x}{\sqrt{2x+1}}$ from 0 to 4

4 votes
Accepted

What topology is inherited by a line in $\mathbb{R}_l \times \Bbb{R}$?

3 votes
Accepted

How to prove $(A_1 \times A_2) \cup (A_3 \times A_4)\subset ( A_1 \cup A_3 )\times ( A_2 \cup A_4)$?

3 votes
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Solutions for $|x^2-5x+2|=4$

3 votes

Derivative n times of $\sqrt x$

3 votes

Connected graph, each power of adjacency matrix has zeros

3 votes

For each $n \ge 1$ compute $Z(S_n)$

3 votes
Accepted

Solving equation that involves nepper number

3 votes

Why don't Venn diagrams count as formal proofs?

3 votes

There exists only two groups of order $p^2$ up to isomorphism.

3 votes
Accepted

Prove that $f$ is discontinuous at $(0,0)$

3 votes

Let $G$ a group of order $6$. Prove that $G \cong \Bbb Z /6 \Bbb Z$ or $G \cong S_3$.

3 votes

Product representations of the factorial function?

3 votes

Abstract Algebra question concerning $\mathbb{Z}_{n}$

2 votes

Prove that if $x^2=e$ then order of $x$ is $1$ or $2$

2 votes

Classify the abelian groups of order 81, 144 and 216

2 votes

Should I try to change the way Abstract Algebra is taught at my university? If so, how?

2 votes

Making up for wasted high school years - where should I begin?

2 votes

Quotient Group G/G = {identity}?