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fkraiem's user avatar
fkraiem's user avatar
fkraiem
  • Member for 10 years, 3 months
  • Last seen more than 4 years ago
11 votes
Accepted

Is $2\mathbb{Z}/4\mathbb{Z}$ NOT a field?!

10 votes

What does "\" mean in math

7 votes

Prove that $\{\frac 1 n \mid n \in \mathbb N\} \cup \{0\}$ is closed in $\mathbb R$

7 votes
Accepted

Congruences of the form $x^2-a \equiv 0$ (mod pq)

6 votes
Accepted

Group with exactly 2 elements of order 10.

5 votes

What is the right interpretation of the axiom of extensionality

5 votes

Quotient a group by a proper subgroup.

5 votes
Accepted

Finding the qth root of unity mod p

5 votes

Weierstrass to general form

5 votes

What is the mathematical distinction between closed and open sets?

5 votes

I was wondering, shouldn't the fraction $\frac {-2}{-1}$ be less than 1?

5 votes
Accepted

Solve $x^8 \equiv 3 \pmod {13}$

5 votes
Accepted

Does the first proposition being true necessarily mean that the second one will be true as well?

4 votes
Accepted

Where can I find the paper "Un théorème de compacité" by J. P. Aubin?

4 votes

Order of a group with all elements as self-inverse

4 votes
Accepted

More numbers between $[0,1]$ or $[1,\infty)$?

4 votes

Infinite groups with all elements of order 2?

4 votes

What is the symbol for primes?

4 votes
Accepted

Prove that these two products of cyclic groups are isomorphic to each other.

4 votes
Accepted

Extension of fields $[L:K]=2$. Show that there is a element $\alpha\in L$ such that $L=K(\alpha)$ and $\alpha^2\in K$.

4 votes

Check a number of form $a^b$.

4 votes

Can a subset of $\mathbb{R}^3$ span $\mathbb{R}^2$?

4 votes

the factor ring $\mathbb Z[i]/\langle3-i\rangle$

3 votes
Accepted

Why is this relation anti-symmetric?

3 votes

How many different bases in $\mathbb{Z}/p\mathbb{Z}$

3 votes

Computing basis of a field extension

3 votes
Accepted

system of congruences proof

3 votes
Accepted

Taking square root of cycle permutations

3 votes
Accepted

Proof that complex conjugate of polynomial result equals pynomial result with complex conjugated argument

3 votes

What is this form of 'notation' called?