On points of qualitative semicontinuity
Tomasz Natkaniec (1985)
Časopis pro pěstování matematiky
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Tomasz Natkaniec (1985)
Časopis pro pěstování matematiky
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Ján Borsík (1992)
Mathematica Slovaca
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Ewa Strońska (1993)
Mathematica Slovaca
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Ján Borsík (2010)
Open Mathematics
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Let C(f), Q(f), E(f) and A(f) be the sets of all continuity, quasicontinuity, upper and lower quasicontinuity and cliquishness points of a real function f: X → ℝ, respectively. The triplets (C(f),Q(f),A(f)), (C(f),E(f),A(f) and (Q(f),E(f),A(f)are characterized for functions defined on Baire metric spaces without isolated points.