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Phosphene
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Third-year Bachelors in Mathematics

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4
Variance of Sum of independent random variables. Wald's identities.
Nov 12, 2022
1
How does $\mathbb{P^1}$ identify with $S^1$?
May 12, 2021
1
Prove the application $\Phi$ is bijective.
Jul 25, 2021
1
Basis of a quotient vector space $\mathbb{R^2}/V$
Aug 4, 2021
1
Given a ring find two divisors of zero $a$ and $b$ such that their sum is a unit.
Aug 21, 2021
1
Prove that $Γ(N)$ is a normal subgroup of $\mathrm{SL}_2 ( \mathbb Z )$
Oct 5, 2021
1
Does there exists a surjective homomorphism from $\mathbb Q[X]/(X^2 + 4)$ to $\mathbb Q \times \mathbb Q$?
Nov 1, 2021
1
Differential geometry in graph theory
Nov 18, 2022
0
Learn Algebra with computational applications [Book Recommendation] [closed]
May 9, 2021
0
What is meant by $A = (A_{ij})$?
Jun 4, 2021