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Tesla Daybreak's user avatar
Tesla Daybreak's user avatar
Tesla Daybreak's user avatar
Tesla Daybreak
  • Member for 3 years, 6 months
  • Last seen this week
10 votes
Accepted

Why is there no continuous bijection from (0,1] to R?

5 votes
Accepted

Derivative of $\arctan(x)$: if $\tan(y) = x$, must the opposite side be $x$ and the adjacent side be $1$?

4 votes

Understanding the necessity of a condition in a question of group theory

4 votes
Accepted

Epic does not always imply surjective?

4 votes
Accepted

Partial order with infimum and supremum

4 votes
Accepted

Square of the Error Function

4 votes

How to prove the set of group axioms is independent?

4 votes
Accepted

Find the minimum value of $xe^x$ without calculus

4 votes

How is it that Borel sets of $\mathbb{C}$ equal the Borel sets of $\mathbb{R}^2$

4 votes
Accepted

Can someone find the flaw in an argument that $\int_0^{\infty}\sin x dx=1$?

3 votes

Find the minimum p: for q > p cubic $ x^3 -7x^2 + qx + 16 =0 $ has only one real root using algebraic arguements only

3 votes

show this $\lceil \frac{n}{1-a_{n}}\rceil =n+1$

3 votes
Accepted

Is "lines remain lines" sufficient to characterise linearity in $\mathbb R^2$?

3 votes
Accepted

Solutions of $x^2 = x + 1$ in $\mathbb Z/n\mathbb Z$

2 votes

Using the First Isomorphism Theorem in Universal Property statements.

2 votes
Accepted

Constructing element which does not belong to a set

2 votes
Accepted

Understanding if statements in EWD931

2 votes
Accepted

Why is this result true for complex numbers?

2 votes
Accepted

Regular curve whose normal lines passes through a fixed point is part of a circle

2 votes

What is this binary relation called?

2 votes
Accepted

Choose distinct elements that satisfy certain conditions in $\Bbb{Z}_n$

2 votes
Accepted

How to prove that $n \equiv 1 \mod (m-1)$ implies $a^n \equiv a \mod m$ for all $n, m, a \in \mathbb{Z}$?

2 votes

Equivalent sets for naturals

1 vote
Accepted

Projecting $\mathbb R^3$ onto $\mathbb RP^2$

1 vote

Limits of $f: E \to \mathbb R$

1 vote
Accepted

Show that a strict positive homogeneous function of degree 0 has a minimum and maximum.

1 vote
Accepted

If $E=X-x$ find $\sqrt{X}-\sqrt{x}$

1 vote
Accepted

For $p$ prime and $\omega = {e^{\frac{{2\pi i}}{p}}}$, show that $\omega \left( {1 - {\omega ^{k - 1}}} \right)$ divides p

1 vote

Determine the solutions to the following linear system of equations

1 vote

Solving exponential equation with negative base