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Jul
6
answered What is the group $\langle U, * \rangle$ where $U$ is the set of roots of unity and * is normal multiplication?
Jul
5
answered $1, e^{ix}, e^{-ix}$ are linearly independent
Jul
3
answered Is this true? $f(g(x))=g(f(x))\iff f^{-1}(g^{-1}(x))=g^{-1}(f^{-1}(x))$.
Jul
2
answered What does $f: A \times A \to A$ mean?
Jul
1
asked Understanding the definition of the represention ring
Jun
30
answered Show that the equation of a line can be given as ℑm(αz+β)=0
Jun
30
answered In how many ways can $3$ balls be tossed into $3$ boxes?
Jun
29
answered Yet Another Monty Hall Question - Please advise if alternative scenario proves the same principle
Jun
27
answered Show that $(B(E\times E), \otimes)$ is a tensor product of $E^*\times E^*$
Jun
23
answered the projection $X \to X/G$ is a submetry?
Jun
23
answered Why the members of $\mathbb R$ will be certain subsets of $\mathbb Q$?
Jun
22
answered How Does A Precessing Sphere Precess?
Jun
22
answered Alternating two-form
Jun
21
answered How many parameters are required to specify a linear subspace?
Jun
19
answered I need to find all functions $f:\mathbb R \rightarrow \mathbb R$ which are continuous and satisfy $f(x+y)=f(x)+f(y)$
Jun
19
answered If $\gamma$ is an uncountable ordinal, then $\gamma$ contains uncountably many successor ordinals.
Jun
19
answered Alternative unconditional form of $\sqrt{n -\sqrt{n -\sqrt{n -\cdots}}}$?
Jun
18
answered Prove that none of $\{11, 111, 1111,\dots \}$ is the perfect square of an integer
Jun
18
answered Properties of the difference of two rotation matrices
Jun
18
answered Are there two $\pi$s?