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Markus's user avatar
Markus's user avatar
Markus
  • Member for 8 years, 6 months
  • Last seen more than a week ago
  • Yekaterinburg
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1,299
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8k
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1
answer
25
questions
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4
Score
24
Posts
92
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4
Score
22
Posts
85
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4
Score
10
Posts
38
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4
Score
3
Posts
12
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4
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2
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8
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0
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7
Posts
27
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Top posts
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All Questions Answers
Score Newest
question
14
Sums of non-surjective entire functions
Jun 11
question
8
Subspaces isomorphic with quotients
May 26, 2018
question
8
Complementability of finite dimensional subspaces
Sep 3, 2019
question
8
Parallelogram law for vectors of equal length
Aug 13, 2022
question
7
Non strictly-singular operators and complemented subspaces
Jul 25, 2015
question
7
Surjective entire functions
May 27, 2017
question
7
Isometries on the unit sphere
Mar 24, 2020
question
7
A characterization of Hilbert spaces by norm one projections
Nov 10, 2022
question
5
Compact non-nuclear operators
May 1, 2016
question
5
Biorthogonal functionals
May 21, 2016
Top network posts
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16
Matrices with a certain property
15
Classes, sets and Russell's paradox
9
Density of Banach spaces
9
Sum of a series indexed by ordinals
7
Subsequences of a basic sequence

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