Manuel Norman's user avatar
Manuel Norman's user avatar
Manuel Norman's user avatar
Manuel Norman
  • Member for 3 years, 9 months
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3 votes
0 answers
51 views

On an inclusion of ranges involving the commutator of two operators

3 votes
1 answer
473 views

Equivalent definitions of Fredholm operators on infinite dimensional Banach spaces

3 votes
1 answer
74 views

On the existence of abundant Carmichael numbers

2 votes
1 answer
35 views

Infinite intersection of closed Hilbert subspaces whose finite intersection is infinite-dimensional

2 votes
1 answer
223 views

Proof of (8.50) in the book Advanced Functional Analysis

2 votes
1 answer
67 views

On the existence of odd, squarefree semiperfect numbers

1 vote
1 answer
64 views

Given $T \in B(X)$, find a compact operator $K$ with rank $1$ such that $\operatorname{rank}(TK - KT) \leq 2$

0 votes
1 answer
104 views

Infinite dimensional separable Hilbert spaces having an open countable dense subset

0 votes
0 answers
103 views

A limit involving the hypergeometric function