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visits member for 1 year, 10 months
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Feb
9
answered $x^5-x^2+1$ is separable over all fields
Sep
26
answered Surprising identities / equations
Dec
10
answered Find a normal extension over $\mathbb{Q}$ of degree 3
Dec
10
answered What is the number of real roots of the polynomial?
Dec
4
answered Arriving at a Contradiction with the Tower Law
Dec
1
answered Finding the rank of subgroups of free groups?
Nov
30
answered What is the mathematical formula for Square Root?
Nov
27
answered A noneempty subset $H$ of a finite goup $G$ is a subgroup if and only if $H$ is closed
Nov
26
answered Prove that $A=\left(\begin{array}{ccc}1&2&3\\4&5&6\\7&8&9\end{array}\right)$ is not invertible
Nov
25
answered Quaternions and rotations in $\Bbb R^3$
Nov
24
answered There are $n$ homomorphisms from the group $Z/nZ$ to the additive group of rationals $Q$
Nov
20
answered show that the equation $x^5+5px^3+5p^2x+q=0$ will have a pair of equal roots, if $q^2+4p^5=0$
Nov
19
answered The smallest field containing $\sqrt[3]{2}$
Nov
19
answered $G=\langle a,b\mid aba=b^2,bab=a^2\rangle$ is not metabelian of order $24$
Nov
19
answered Discriminants and Galois groups
Nov
9
answered Zero Divisors in Direct Product of Rings
Nov
9
answered Is $\Bbb Z_3 [x] / \langle x^2 - 1 \rangle \cong \Bbb Z_3 \times \Bbb Z_3$?
Nov
8
answered Geometry: Auxiliary Lines
Nov
7
answered How would I characterize ${\rm Gal}(\Bbb Q(ζ_{24})/\Bbb Q(i))$ up to isomorphism?
Nov
7
answered Automorphisms of $\mathbb{Z}_2 \times \mathbb{Z}_2$