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Neighborhood of the identity matrix

Published on
#linear-algebra #general-topology
575
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About residual sets and dense sets

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#general-topology #metric-spaces
354
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Unit sphere is sequentially compact \ compact

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#real-analysis #general-topology
48
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Product of bases for an infinite product of topological spaces

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#general-topology
259
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Proving Completeness of a $\alpha$-Holder space

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#real-analysis #general-topology #functional-analysis
181
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Borel $\sigma$-algebra of the order topology $\textit{vs.}$ $\sigma$-algebra generated by the topological subbasis

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#general-topology #measure-theory #proof-verification #order-theory
102
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Successive maps in exact sequence leads to $0$. Celluar Homology

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#general-topology #algebraic-topology #proof-explanation #homology-cohomology #homological-algebra
111
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Union of lines $ \{ y = x/n : n \in \mathbb N+ \}$ not homeomorphic to infinite wedge sum of lines?

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#general-topology #algebraic-topology #homotopy-theory
108
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Which term came first, "open set" or "open interval"?

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#general-topology #math-history
135
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An element of a set with a finite cover must be an element of at most two open intervals in a subcover?

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#real-analysis #general-topology #proof-verification #continuity #uniform-continuity
134
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Gelfand-Naimark Theorem of non-unital case

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#general-topology #operator-algebras
52
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Properties of open subsets of the real numbers

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#general-topology #real-numbers #topological-groups
112
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Countable basis of topology

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#general-topology
64
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Problem proving that topology product is a topology

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#general-topology
230
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Giving a proof to the weak compactness of the unity ball in a reflexive normed space

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#general-topology #functional-analysis #normed-spaces #reflexive-space

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