closed graph property
Almost open linear map
Closed graph theorem – Theorem relating continuity to graphs
Closed graph theorem (functional analysis) – Theorems connecting continuity to closure of graphs
Kakutani fixed-point theorem – On when a function f: S→Pow(S) on a compact nonempty convex subset S⊂ℝⁿ has a fixed point
Open mapping theorem (functional analysis) – Condition for a linear operator to be open
Webbed space – Space where open mapping and closed graph theorems hold
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