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Mary Maths's user avatar
Mary Maths's user avatar
Mary Maths's user avatar
Mary Maths
  • Member for 5 years, 9 months
  • Last seen more than a month ago
6 votes
2 answers
618 views

What is a "compactness argument"?

5 votes
1 answer
150 views

$\operatorname{Frac}(A)/A$ as an $A$-module

2 votes
1 answer
65 views

$(\mathbb{Z}_2\times \mathbb{Z}_3)[X]/ (X^2)$

2 votes
1 answer
125 views

clarification for disjoint union from any union

2 votes
1 answer
55 views

Jacobian for function with couple of couple

1 vote
0 answers
39 views

Weak formulation General concept

1 vote
1 answer
78 views

Norm inequalities for sums of two basic elementary operators

1 vote
0 answers
129 views

a proof for krull schmidt theorem

1 vote
1 answer
59 views

Using uniform continuity

0 votes
1 answer
506 views

An algebra that is not a $\sigma$-algebra

0 votes
1 answer
188 views

Writing an interval with infinite unions or infinite intersection

0 votes
0 answers
165 views

Find zero divisors for polynomials in several variables

0 votes
0 answers
86 views

Tensor product in algebra and analysis

0 votes
1 answer
56 views

Identification in general [closed]

0 votes
1 answer
57 views

Problem 1.25 Problem Books in Mathematics" ,Peter Winkler.

0 votes
1 answer
37 views

"clan" generated by singletons of a set

0 votes
1 answer
35 views

$L$ acts on K via the adjoint representation

0 votes
0 answers
45 views

maximal torus of derivations in Lie algebra

0 votes
2 answers
81 views

Calculating the determinant of a $2n \times 2n$ matrix by means of a decomposition into four $n \times n$ blocks

0 votes
1 answer
401 views

Direct sum of dual space