Reputation
389
Top tag
Next privilege 500 Rep.
Access review queues
Badges
1 7
Newest
 Curious
Impact
~4k people reached

  • 0 posts edited
  • 0 helpful flags
  • 11 votes cast
Apr
20
revised Divergent succession, but with convergent sum average.
added 3 characters in body
Apr
20
comment Divergent succession, but with convergent sum average.
$a_n\rightarrow\infty$ means $a_n\rightarrow+\infty$ or $a_n\rightarrow-\infty$ or both. That is, a particular case might be an alternating series.
Apr
20
comment Divergent succession, but with convergent sum average.
that is true if $a_n>0$, but if $a_n=(-1)^nn^\alpha$ with $\alpha$ suitable ?
Apr
20
asked Divergent succession, but with convergent sum average.
Jul
2
awarded  Curious
Feb
9
asked Why $Sym^{n}(\mathbb{C})=\mathbb{C}^{n}$ or $Sym^{n}([0,1])=\Delta^{n}$ is a $n$-simplex?
Feb
6
asked Proof: $C(X×Y)=C(X)⊗C(Y)$
Jan
29
awarded  Yearling
Jul
9
asked Using the Casorati-Weierstrass theorem.
Jul
9
asked show that a polynomial has no zeros in the first quadrant of the complex plane
Jun
30
accepted Constant function and Argument Principle
Jun
28
comment Constant function and Argument Principle
Why do you say that: z lies in the unbounded component of $h(C)$?. And When do you use the hypothesis: $ \operatorname{Re} h(z)= (\operatorname{Im} h(z))^2$?
Jun
27
revised Constant function and Argument Principle
added 14 characters in body
Jun
27
revised Constant function and Argument Principle
added 9 characters in body
Jun
27
revised Constant function and Argument Principle
added 9 characters in body
Jun
27
comment Constant function and Argument Principle
Yes Potato $C\subset D$.
Jun
27
asked Constant function and Argument Principle
Jun
7
comment Prove $SO(3)$, the group of rotations of $\mathbb{R}^3$, is not homotopically equivalent to $S^1\times S^2$
but in general π1(X×Y) = π1(X)×π1(Y) is not true.
Jun
7
asked Prove $SO(3)$, the group of rotations of $\mathbb{R}^3$, is not homotopically equivalent to $S^1\times S^2$
May
13
accepted Let $W$ be a Wiener process and $X(t):=W^{2}(t)$ for $t\geq 0.$ Calculate $\operatorname{Cov}(X(s), X(t))$.