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visits member for 2 years, 2 months
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Jan
21
revised Bounded functional which composed with an unbounded operator becomes unbounded
edited body
Jan
21
asked Bounded functional which composed with an unbounded operator becomes unbounded
Nov
13
awarded  Yearling
Nov
4
accepted Are distance functions $ d(a_1,x), …, d(a_n,x) $ for an arbitrary metric space linearly independent?
Nov
3
revised Are distance functions $ d(a_1,x), …, d(a_n,x) $ for an arbitrary metric space linearly independent?
added 45 characters in body
Nov
3
asked Are distance functions $ d(a_1,x), …, d(a_n,x) $ for an arbitrary metric space linearly independent?
Nov
2
accepted Every metric space can be isometrically embedded in a Banach space, so that it's a linearly independent set
Nov
2
asked Finding a norm on $ \mathbb{R}^X $ such that the “natural” embedding of a metric space $ X $ in $ \mathbb{R}^X $ becomes an isometry
Oct
30
awarded  Tumbleweed
Oct
29
asked Every metric space can be isometrically embedded in a Banach space, so that it's a linearly independent set
Oct
23
asked (soft question) Kreyszig's Functional Analysis or Rudin's Real and complex analysis for an introduction into more advanced analysis?
Oct
22
accepted Are the normed spaces $ \mathbb{R}^{n^2} $ and $ M_n(\mathbb{R}) $ isometric?
Oct
22
asked Are the normed spaces $ \mathbb{R}^{n^2} $ and $ M_n(\mathbb{R}) $ isometric?
Oct
20
comment Proving the convergence of this sequence
I'm interested in the divergence of the series of distances, which are absolute values of differences.
Oct
20
asked Proving the convergence of this sequence
Jul
2
awarded  Curious
Jun
9
accepted Help with understanding a proof about differentiating a real power series
Jun
9
asked Help with understanding a proof about differentiating a real power series
Jun
4
asked Difference quotient inequality with convex functions
Jun
1
accepted Hyperreals - is there a “boundary” between convergent and divergent series?