rschwieb

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PhD in rings and modules

Interests:

Mathematical: ring and module theory, geometry, Lie algebra, Clifford algebra, mathematical physics

Other: programming, Wikipedia, chess


748 Answers

newest activity votes
4
Notation for infinite product in reverse order
4
Why are modular lattices important?
4
Find out dimension of the eigenspace of a given linear transformation $T$
4
What do ideals of a ring say about its inner structure?
4
Showing a ring is artinian?
4
Eigenvalues of $A$ compared to $A^H$
4
Proof of equation in modular arithmetic
3
Big Greeks and commutation
3
Proof of the uniqueness of maximal ideal
3
Prove that $3^n>n^4$ if $n\geq8$
3
Is the validity of measuring area by approximation an assumption of calculus?
3
Probability of selecting correct answer in 15 out of 25 exercises with 0.25 chance
3
Understanding bicomplex numbers
3
Intuition behind Direct limits
3
Are all vectors straight lines?
3
Get code words from generator matrix
3
Foil, greatest common factor
3
Definition of Jacobson radical
3
Show $\det \left[T\right]_\beta=-1$, for any basis $\beta$ when $Tx=x-2(x,u)u$, $u$ unit vector
3
How to find $x$ of this equation?
3
Number of 4 × 4 Matrices Having Odd Determinants
3
Can a group of order $55$ have exactly $20$ elements of order $11$?
3
Help finding all elements of order 2 in $S_6$.
3
Prove the third isomorphism theorem
3
If every element has prime power order and $Z(G) \neq 1$ then $G$ is a $p$-group.
3
Reference request: Morita contexts
3
If $\phi:G\to\bar{G}$ is an isomorphism and if $H$ is a normal subgroup of $G$, then $\phi(H)$ is a normal subgroup of $\bar{G}$.
3
Prove that if in ring $R$ multiplications $xy$ and $yx$ are invertible, then elements $x$ and $y$ are also invertible.
3
Example of a non-free module over some Laurent polynomial ring
3
Combing rotation quaternions
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