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1d
answered Lattices and Hasse diagrams
1d
answered Is ideal an “anti-field”?
1d
answered Difference between torsion and zero divisor
Jul
28
answered $R$ a local ring, also a PID. $I,J$ ideals from $R$. Show that $I \subseteq J$ or $J \subseteq I$
Jul
26
answered solution verification: find characteristic of integral domain under given conditions
Jul
25
answered Modules that have finitely many submodules
Jul
24
answered Example of a commutative, local, dual ring with nilradical $N$ such that $ann(N)\nsubseteq N$
Jul
24
asked What properties do the rings of infinite, upper-triangular matrices have?
Jul
23
answered Ideals for non commutative ring
Jul
20
answered Detailed example of a skew field different from Hamilton quaternion
Jul
17
answered Centre of matrix ring over skew field
Jul
15
answered Is every noninvertible matrix a zero divisor?
Jul
15
answered If $R$ is a simple Artinian ring, then when is a finitely generated module free?
Jul
14
answered What is the significance of $A+ (B\cap C)=(A + B)\cap C$, where $A\subseteq C$, for modules?
Jul
10
answered Noetherian PI rings are fully bounded
Jul
9
answered Question concerning a minimal faithful left ideal in an artin algebra
Jul
8
answered Why use CPCTC instead of just “Definition of Congruent Figures”?
Jun
30
answered Is a = 0 a valid counterexample to this statement?
Jun
30
answered Under what conditions does $M \oplus A \cong M \oplus B$ imply $A \cong B$?
Jun
29
answered Rotate a unit sphere such as to align it two orthogonal unit vectors