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 Aug 14 revised Can a sequence have infinitely many limits among its subsequences? added 3 characters in body Aug 14 awarded Yearling Aug 14 answered Can a sequence have infinitely many limits among its subsequences? Jan 24 comment Can a complex number ever be considered 'bigger' or 'smaller' than a real number, or vice versa? I beg to differ : $\mathbb R$ is of infinite dimension as a $\mathbb Q$-vector space. And $\mathbb C$ of dimension $1$ as a $\mathbb C$-vector space. ;) Jan 3 awarded Autobiographer Aug 8 answered Proof of uniqueness of identity element of addition of vector space Jun 24 comment Prove that every irrational numbers can be approximated by rational numbers. If you want to split hairs, it doesn't mean that reals can be approximated by rational, since with this definition they don't live in the same set. You still have to talk about the identification of $ℚ$ with a certain dense set of $ℝ$. Jun 16 revised Real sequences which sum to 0, multiply to 1. Just clarifying a point. Jun 16 suggested approved edit on Real sequences which sum to 0, multiply to 1. Apr 3 revised Prove that if $f$ is differentiable in $\mathbb{R}^n$ then it is continuous. added 494 characters in body Apr 3 answered Prove that if $f$ is differentiable in $\mathbb{R}^n$ then it is continuous. Apr 3 revised A function $F:\mathbb{Q} \rightarrow \rm numerators$ I now know it used to be the common notation, but it confused the hell out of me at first, and I am probably not the only one Apr 3 suggested approved edit on A function $F:\mathbb{Q} \rightarrow \rm numerators$ Mar 26 awarded Critic Nov 5 awarded Popular Question Jul 30 comment Is there such a thing as a removable singularity for a power series on the edge of the convergence disc? @GerryMyerson Ah, is this called “removable singularity”, too? Then I suppose you have it right. There are different word for this and complex analysis singularities in French. Jul 30 comment Is there such a thing as a removable singularity for a power series on the edge of the convergence disc? @GerryMyerson Well, I know that, it is the point of this question. What could removable singularity mean in this context? Jul 30 awarded Promoter Jul 25 asked Is there such a thing as a removable singularity for a power series on the edge of the convergence disc? Jul 17 awarded Talkative