8h
answered About the definition of norm in Clifford algebra
9h
answered Additive Order and Ring
1d
answered Is simple module over commutative ring always a field?
Jan
29
answered Infinite rings with lots of zero divisors
Jan
27
answered Let R be a ring with unity $1_R$ and let S (with unity $1_S$) be a subring of R. Prove that either $1_S=1_R$ or $1_S$ is a zero divisor of R.
Jan
27
answered Example of a Non-Commutative Division Ring With Finite Characteristics
Jan
27
answered Why is it not a sufficient condition to conclude that a is a unity based only on the information that $xa = x$ for all $x$ in $R$?
Jan
23
answered do you need $P$ prime to show that $R/P$ is a PID if $R$ is a PID?
Jan
22
answered Converting Quaternion or 4x4 Matrix to 3x3 Matrix representation.
Jan
21
answered About terminology “Orthogonal” and “Orthonormal”
Jan
19
answered Characteristic of a ring: intuitive explanation
Jan
18
answered Is the converse of Sylvester's inertia law true?
Jan
18
answered prime elements, irreducible elements, unique factorization (rings)
Jan
18
answered In any ring $R$ with a multiplicative identity , does every non-unit element belongs to some maximal ideal of $R$ ?
Jan
18
answered What are the theorems in mathematics, proved using completely different ideas?
Jan
18
answered A question about opposite ring.
Jan
17
answered Ring homomorphism $\mathbb{Z}/8\mathbb{Z} \to \mathbb{Z}/5\mathbb{Z}$ implies $1=0$
Jan
17
answered Exterior Product vs Cross Product
Jan
16
answered Why is positive (semi-)definite only defined for symmetric matrices?
Jan
16
answered Is ring isomorphic to complex field?