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 Jul6 asked When is a metric space Euclidean, without referring to $\mathbb R^n$? Jul6 answered What is the group $\langle U, * \rangle$ where $U$ is the set of roots of unity and * is normal multiplication? Jul5 answered $1, e^{ix}, e^{-ix}$ are linearly independent Jul3 answered Is this true? $f(g(x))=g(f(x))\iff f^{-1}(g^{-1}(x))=g^{-1}(f^{-1}(x))$. Jul2 answered What does $f: A \times A \to A$ mean? Jul1 asked Understanding the definition of the represention ring Jun30 answered Show that the equation of a line can be given as ℑm(αz+β)=0 Jun30 answered In how many ways can $3$ balls be tossed into $3$ boxes? Jun29 answered Yet Another Monty Hall Question - Please advise if alternative scenario proves the same principle Jun27 answered Show that $(B(E\times E), \otimes)$ is a tensor product of $E^*\times E^*$ Jun23 answered the projection $X \to X/G$ is a submetry? Jun23 answered Why the members of $\mathbb R$ will be certain subsets of $\mathbb Q$? Jun22 answered How Does A Precessing Sphere Precess? Jun22 answered Alternating two-form Jun21 answered How many parameters are required to specify a linear subspace? Jun19 answered I need to find all functions $f:\mathbb R \rightarrow \mathbb R$ which are continuous and satisfy $f(x+y)=f(x)+f(y)$ Jun19 answered If $\gamma$ is an uncountable ordinal, then $\gamma$ contains uncountably many successor ordinals. Jun19 answered Alternative unconditional form of $\sqrt{n -\sqrt{n -\sqrt{n -\cdots}}}$? Jun18 answered Prove that none of $\{11, 111, 1111,\dots \}$ is the perfect square of an integer Jun18 answered Properties of the difference of two rotation matrices