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Feb
1
answered How do we conclude that $f(x)=0, \forall x\in \mathbb{R}$ ?
Dec
18
answered How to show that $Sp\{u+v-3w,2v-w,t+w,v+w\} = Sp\{u,v,w,t\}$
Nov
9
answered Prove the infinite union is not regular
Nov
7
asked An exercise related to Krull topology - showing that two bases define the same topology
Nov
6
asked Subgroups of Index $2$ of $(\mathbb{Z}_{2})^{\aleph_{0}}$
Nov
6
answered Prove that the Language $L= \{ 0^n1^m \;|\; n,m \ge 0 \}$ is regular
Nov
2
asked Proving that $Gal(K^{\text{sep}}/K)=Aut_{K}(\tilde{K})$
Nov
2
asked Proving that $\mathbb{Q}^{\text{sol}}$ isn't hilbertiean
Oct
31
asked Proving that the maximal abelian extension contains all abelian extensions
Oct
31
asked Checking irreducibility of a polynomial in $\mathbb{K}[x,y]$ and PAC fields
Oct
24
asked Power iteration- What are the conditions?
Sep
28
answered Can a number be a subset of another set?
Sep
20
answered Number of conjugates of an $m$-cycle $\sigma$ in $S_n$
Sep
4
answered A trick for calculating $n^6$ that I don't understand
Sep
4
asked What is a good theoretical, yet somewhat practical, book about error correction codes?
Aug
29
answered Finding the minimal polynomial of a linear operator
Aug
19
answered Prove that $\lim _{x \to \infty} \sin x$ doesn't exist (using delta epsilon)
Aug
18
answered G's order is a multiply of coprime numbers, need to prove about its subgroups.
Aug
15
answered True or false. If A ∪ B = ∅ , then A = ∅ and B = ∅ .
Aug
7
answered Showing irreducibility of a polynomial.