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Chickenmancer
  • Member for 7 years, 5 months
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  • A fine coop.
9 votes

Finding the derivative of function with domain empty set

8 votes

Why do we want norms to follow triangle inequality

6 votes
Accepted

Let A be a ring. Rewrite ${(x+1)}^5$

5 votes

How many group homomorphisms $\phi: S_5\to C_5$ are there?

5 votes

On an isomorphism of rings

5 votes

Can a finite set have a topology with an infinite number of open sets?

4 votes

Integral by trigonometric substitution: $ \int \:\frac{2y^3}{\sqrt{1-y^2}}\mathrm dy $

4 votes
Accepted

Why does $\lim_{x\to 0^{+}} \ln(e^x - 1) = -\infty$ and not $1$?

4 votes
Accepted

Homeomorphism between intervals

4 votes

Let $R$ be a ring and let $a \in R$ satisfy $a^2 = a$

4 votes

Why isn't Fourier Series taught in calculus 2?

4 votes
Accepted

What is the maximum number of non-overlapping circles that can be placed inside an ellipse?

4 votes

If ${a_n}$ converges, then ${a_{2n}}$ converges proof question

4 votes
Accepted

Example of algebraic structure that is non distributive for BOTH distributive laws and how to do computation in them?

4 votes
Accepted

Any simple way for $\int \frac{\sqrt{\sin x-\sin^3x}}{\sqrt{1-\sin^3x}}dx$?

3 votes

Do some areas of math have worse problems?

3 votes
Accepted

When "If $A$ is true then $B$ is true", is it valid to assert that "If $B$ is false, $A$ must also be false"?

3 votes
Accepted

What is the percentage of 2-groups out of all the groups of order less than $10,000$?

3 votes
Accepted

Question concerning Witt ring of a (perfect) field

3 votes

What is Z tensor 0? What about Z tortion 0?

3 votes
Accepted

Gaussian elimination vs substitution

3 votes

Realising finite abelian groups as Brauer groups of a field

3 votes
Accepted

$N \lhd G, G/N$ are Nilpotent $ \not \Rightarrow G$ is Nilpotent

3 votes

Set Theory and groups

3 votes

Confusion about definition of a topological group?

3 votes

Does $V= \ker T \oplus \operatorname{im} T$ imply diagonalizable?

3 votes
Accepted

bounded but not totally bounded subset of $\ell^2.$

3 votes

Is $\Bbb R$ closed under subtraction?

3 votes

Integral of exponential times $\frac{x^2}{x^2+a}$

3 votes

Find solution space of $\ Ax = b $

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