Belgi

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193 Answers

newest activity votes
3
Solving $xe^{-x}+2e^{-x}=0$
3
abelian finite groups - basic
3
$\mathbb{R}\subset\mathbb{F}\subset\mathbb{C}$ implies $\mathbb{F}=\mathbb{R}$ or $\mathbb{F}=\mathbb{C}$?
3
How to “make up a formula” of a sum?
3
Approximation of $e$ by a rational number
3
Set intersection the same as logical conjunction?
3
Size of the set of functions from $X$ to $Y$
3
Proof that $V = W_1 \oplus W_2$
3
Commutative matrices confusion
3
Notation showing a set is non-empty and finite
3
Splitting field and dimension of irreducible polynomials
3
Let A be an $n\times n$ matrix with complex entries which is not a diagonal matrix. Pick out the cases when A is diagonalizable
3
Real life applications of general vector spaces
3
I need to learn Graphs in ONE day
3
Can a subset of a group, which does not contain the identity element, be a group
3
Does $\varepsilon^2$ instead of $\varepsilon$ imply convergence?
2
is this function injective?
2
Proof: $\vec x,\vec y \perp \vec z \Rightarrow \vec x || \vec y$
2
finding the number of subsets and functions of $S_n$
2
If $P$ is real orthogonal matrix with $\det P = -1$, prove that $-1$ is an eigenvalue of $P$.
2
Extensions of $\mathbb{Q}\left(\sqrt{2}\right)\rightarrow\mathbb{Q}\left(\sqrt{2}\right),\ \sqrt{2}\mapsto -\sqrt{2}.$
2
Finding the Galois group of $\mathbb Q (\sqrt 5 +\sqrt 7) \big/ \mathbb Q$
2
Finding the value of $a$ which minimizes the absolute maximum of $f(x)$
2
The relation between unknown (specific example)
2
Galois group isomorphic to $S_3$
2
How to solve $2{x_{1}}+2{x_{2}}+{x_{3}}+{x_{4}}={12}$
2
Is there a theorem that disproves this or is this just some made up meaningless thing?
2
Remark in Lang on Extension Fields
2
Find $2\times 2$ matrix of linear transformation $T$
2
how would I find the splitting field of $x^4+13$?
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