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How to draw a sublattice to exhibit diagonalization?

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#linear-algebra #abstract-algebra #ring-theory #modules #finite-rings
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Non isomorphic rings of order 4

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#abstract-algebra #ring-theory #finite-rings
258
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What is the difference between $Z/(4)$ and the field $F4$?

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#abstract-algebra #ring-theory #finite-fields #finite-rings
113
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A polynomial with unique root in every $ \mathbb Z _ n $

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#number-theory #polynomials #roots #finite-rings
31
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Lifting Idempotents in McDonald's Finite Rings w/ Identity Theorem XIV.3

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#abstract-algebra #local-rings #finite-rings
2.9k
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Why does Gaussian elimination sometimes work in rings where it should not?

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#abstract-algebra #ring-theory #modular-arithmetic #gaussian-elimination #finite-rings
121
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Subrings and quotients of finite semigroup algebras

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#abstract-algebra #ring-theory #semigroups #universal-algebra #finite-rings
175
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Linear congruences over a finite ring are equivalent

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#linear-algebra #abstract-algebra #number-theory #modular-arithmetic #finite-rings
46
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Every ideal of a finite principal ring is generated by a zero divisor

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#abstract-algebra #ring-theory #finite-rings
1.6k
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There are only two non isomorphic rings with $p$ elements

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#abstract-algebra #ring-theory #finite-rings
581
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the number of zero divisors in polynomial ring

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#number-theory #ring-theory #finite-rings
760
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Ring with many one-sided zero-divisors

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#abstract-algebra #ring-theory #finite-rings
152
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A finite pseudo-ring such that $ab^2=b$ for some $(a,b)\in A$

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#abstract-algebra #semigroups #finite-rings
1.2k
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The cardinality of $\text{GL}(n, \mathbb{Z} / m\mathbb{Z})$

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#linear-algebra #elementary-number-theory #finite-rings
142
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How to find all ring structures over $C_2\times C_2$?

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#abstract-algebra #ring-theory #noncommutative-algebra #finite-rings

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