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João Victor Bateli Romão
  • Member for 6 years, 9 months
  • Last seen more than 3 years ago
  • Brazil
11 votes
2 answers
855 views

What is the right way to define a function?

8 votes
2 answers
466 views

Linear transformation $T$ such that for every extension $\overline{T}$, $\|\overline{T}\|>\|T\|$.

4 votes
3 answers
1k views

Prove that $\lim f_n(x_n) = f(x), x_n\rightarrow x,$ then $f_n\rightarrow f$ uniformly on compact

4 votes
1 answer
123 views

Where are the points of $\{z^{z}\in \mathbb{R}|z\in\mathbb{C}\}$?

4 votes
0 answers
315 views

How close is Mazur's Separation Theorem and the 2nd geometric form of HBT?

3 votes
2 answers
74 views

Condition for inverse of quadratic function - alternative solutions

2 votes
3 answers
602 views

Is there a additive non-linear non-complex map?

2 votes
1 answer
58 views

What does $M$-equivalent basis mean?

2 votes
1 answer
207 views

Mazur Lemma for sequence of Lipschitz functions

1 vote
1 answer
89 views

Evaluation of convolutions by Fejér kernels have finite-dimentional range?

1 vote
0 answers
73 views

How to prove $\lim\limits_{x\rightarrow\infty}f(x)=0$ and $\lim\limits_{x\rightarrow\infty}f''(x)=0\Rightarrow\lim\limits_{x\rightarrow\infty}f'(x)$? [duplicate]

0 votes
3 answers
156 views

Can partially constant functions be analytic?

0 votes
0 answers
147 views

Is a polynomial normal ODE system solution a real-analytic function?

0 votes
2 answers
462 views

If $T$ is normal and $T^2=-I$, then T is unitary