EDB — 2CV

12.1 Semi continuity[2CV]

Let \((X,𝜏)\) be a topological space.

Note that \(f\) is lower semi continue if and only if \((-f)\) is upper semi continue: so in many subsequent exercises we will only see cases l.s.c. cases.

E1

[139]↺↻

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[13C]↺↻

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[13D]↺↻

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[13G]↺↻

E1

[13J]↺↻

E1

[13M]↺↻

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[13P]↺↻

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[13R]↺↻

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[13T]↺↻

E1

[13W]↺↻

E1

[13Y]↺↻

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[13Z]↺↻