Alexander Osorio
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389
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 Apr20 revised Divergent succession, but with convergent sum average. added 3 characters in body Apr20 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. Apr20 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 ? Apr20 asked Divergent succession, but with convergent sum average. Jul2 awarded Curious Feb9 asked Why $Sym^{n}(\mathbb{C})=\mathbb{C}^{n}$ or $Sym^{n}([0,1])=\Delta^{n}$ is a $n$-simplex? Feb6 asked Proof: $C(X×Y)=C(X)⊗C(Y)$ Jan29 awarded Yearling Jul9 asked Using the Casorati-Weierstrass theorem. Jul9 asked show that a polynomial has no zeros in the first quadrant of the complex plane Jun30 accepted Constant function and Argument Principle Jun28 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: $\operatorname{Re} h(z)= (\operatorname{Im} h(z))^2$? Jun27 revised Constant function and Argument Principle added 14 characters in body Jun27 revised Constant function and Argument Principle added 9 characters in body Jun27 revised Constant function and Argument Principle added 9 characters in body Jun27 comment Constant function and Argument Principle Yes Potato $C\subset D$. Jun27 asked Constant function and Argument Principle Jun7 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. Jun7 asked Prove $SO(3)$, the group of rotations of $\mathbb{R}^3$, is not homotopically equivalent to $S^1\times S^2$ May13 accepted Let $W$ be a Wiener process and $X(t):=W^{2}(t)$ for $t\geq 0.$ Calculate $\operatorname{Cov}(X(s), X(t))$.