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Tsemo Aristide

Toronto, Canada

I am a teacher at Toronto district school board

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28
If $f(x) \in \mathbb{Q}[x]$ is irreducible, then is $f(x^2)$irreducible?
math.stackexchange.com

20
Group cohomology and condensed matter
mathoverflow.net

17
Why is a unique Sylow p-subgroup normal?
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15
Is it possible to find an uncountable number of disjoint open intervals in $R$?
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14
Let $a,b,c$ be the roots of $x^3 - x - 1= 0$ find $a^5 + b^5 + c^5$
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13
How to calculate the rank of a matrix?
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13
What is an example of infinite dimensional subspace that is not closed?
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13
Is the set of all Irrational Numbers a ring or a field?
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13
Is a continuous function between two uniformly continuous functions uniformly continuous?
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13
If $X$ is a non-compact metric space, can $X^n$ ever be compact?
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12
Hahn-Banach theorem for arbitrary locally compact fields?
mathoverflow.net

12
Closed $3$-manifold, $2$-dimensional subbundle of this manifold, is this form exact or not?
mathoverflow.net

12
Euler characteristic of a connected sum of surfaces.
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12
Infinite group acts on a set such that an orbit of any length exists.
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12
Are complex numbers two dimensional or one dimensional?
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11
Do smooth manifolds admit linear atlases?
mathoverflow.net

10
quotient space of Eilenberg-MacLane space
mathoverflow.net

10
On a parallelizable manifold, is there always a frame satisfying $[X_i,X_j]=0$?
mathoverflow.net

10
A $\mathbb{R}^{n}$ -fiber bundle which do not admit a n-dimensional vector bundle structure
mathoverflow.net

10
Proof of “$L$ / Rad$L$ is semisimple for arbitrary Lie algebra L”.
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10
$\lim\limits_{x \to 0} \frac{\tan(mx)}{\tan(nx)} =$?
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10
An abelian group $G$ with ${\rm Aut}(G)$ non-abelian
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10
Why is this set not a manifold?
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10
The limit of a sequence $u_{n+1}=\exp(u_n)+u_n$
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10
Group of prime with identity two possible?
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10
Prove that $U=\{x \in X\mid d(x,A)<d(x,B)\}$ is open when $A$ and $B$ are disjoint
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9
Extreme Value Theorem on Manifold
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9
Why is a gradient field a special case of a vector field?
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9
Division ring if and only if it has no proper left ideals.
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9
Prove that 1. $\kappa(x,y)$ is a symmetric bilinear form? 2. $\kappa([x,y],z)=\kappa(x,[y,z])$
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