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Mar
24
answered Deterministic finite automata (DFA) (have odd length or end with aaa)
Mar
3
answered Elementary question about the limit $\big( 1 - \frac 1 {\sqrt n}\big )^n$, $n\to\infty$.
Feb
21
answered $\mathbb{Z}$ is a vector space over $\mathbb{Q}$
Feb
20
answered Why are matrices indexed by row first?
Feb
16
answered Finding limit of a 2 variable function (or show a lack of)
Feb
16
answered Determinant equality issue
Feb
6
answered Is $0$ a natural number?
Dec
18
answered If $u$ is a unit in $S$, then $u$ is a unit in $R$
Dec
11
asked What does the theory of the empty set look like?
Nov
21
asked Why is the union of two closed sets again closed in the Scott topology?
Nov
17
answered Prove that a Linear-Map is surjective.
Nov
9
asked Is there some sort of trick to show naturality?
Nov
7
answered Group actions and quotient groups
Nov
7
asked Is there a name for a monoid with a distinguished absorbing element?
Nov
2
answered $R$ is a ring with p elements where p is a prime and has no zero divisors. Prove that $R$ is a field and is isomorphic to $\mathbb{Z}_p$.
Oct
26
answered Problem in complex analysis .
Oct
16
asked About the classification of linear autonomic differential equations of the plane.
Oct
12
answered Computing the dimension of a vector space of matrices that commute with a given matrix B,
Oct
11
answered Constructing finite fields of order $8$ and $27$ or any non-prime
Oct
10
answered Show CA=CB iff A=B