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Feb
9
asked $G$ is a finite group and $G_1$,$G_2$ are subgroup that $G_1 \cap G_2=\{1\}$, then $|G_1|.|G_2| \big| |G|$?
Jan
24
awarded  Supporter
Jan
24
answered Consider a function $f(x) = x^4+x^3+x^2+x+1$, where x is an integer, $x\gt 1$. What will be the remainder when $f(x^5)$ is divided by $f(x)$?
Jan
24
awarded  Editor
Jan
24
revised Prove $n^\frac{1+2}{\sqrt{\log n}} = O(n \log n)$
added 9 characters in body
Jan
24
comment Prove $n^\frac{1+2}{\sqrt{\log n}} = O(n \log n)$
Is it {1+2}/sqrt{n}? (=3/sqrt{n})?
Jan
24
answered Prove $n^\frac{1+2}{\sqrt{\log n}} = O(n \log n)$
Jan
24
comment Prove $n^\frac{1+2}{\sqrt{\log n}} = O(n \log n)$
do you mean n^{1+2/sqrt{logn}} ?
Jan
23
comment Is there any manifold that is not a subspace of a finite dimensional euclidean space?
I'm not sure, but someone says that it's a special case, when the space is 'riemannian'..
Jan
23
asked Is there any manifold that is not a subspace of a finite dimensional euclidean space?
Jan
20
awarded  Teacher
Jan
20
answered Cyclic group of order $4$ and Klein four-group are not isomorphic.
Jan
18
comment Is a complex number with transcendental imaginary part, transcendental?
Oh thanks. I didn't think enough..
Jan
18
awarded  Student
Jan
18
asked Is a complex number with transcendental imaginary part, transcendental?