user avatar
user avatar
user avatar
Zanzi
  • Member for 6 years, 6 months
  • Last seen more than 1 year ago
  • France
7 votes

Is there a bijective function $f: \mathbb{R}\to\mathbb{R}$ that is discontinuous?

5 votes

Is this possible? AB- BA=I

5 votes
Accepted

Computing an improper integral involving polynomial multiplied by an exponential

2 votes

How do I factorize this numerator?

2 votes

Linear and non-differentiable

2 votes

If $f:[a,b]\to\mathbb{R}$ is continuous but unbounded, then on which subintervals is $f$ unbounded?

2 votes
Accepted

Using the inversion formula of a Fourier Transform to calculate a limit

1 vote

How to proof for all sets $A$ and $B$: if $A^{\complement} \subseteq B$ then $ B^{\complement} \subseteq A$

1 vote
Accepted

Noether's normalization lemma in practice (example)

1 vote
Accepted

Supremum calcualtion, how do I get the answer

0 votes
Accepted

Does length $[0,1]$ = length $(0,1)$?

0 votes

Finding the modulus of complex functions

0 votes

Bound a product as seen in a paper

0 votes

Why does $f:[a,b] \rightarrow \mathbb{R}$ need $f$ to be continuous on $[a,b]$ but only differentiable on $(a,b)$, in some theorems.

0 votes
Accepted

Example of nilpotent matrix such that $0$ is not in the closure of the similarity class of $A$