On Sums of Directional Essential Cluster Sets

DOI10.1112/BLMS/20.2.145zbMath0681.26003OpenAlexW2001600892MaRDI QIDQ4730004

J. M. Jastrzebski

Publication date: 1988

Published in: Bulletin of the London Mathematical Society (Search for Journal in Brave)

Full work available at URL: https://doi.org/10.1112/blms/20.2.145

zbMATH Keywords

planesigma porous setdirectional cluster setsboundary behaviour of real functions defined in the upper halfboundary behaviour of real functions defined in the upper half planelinear measurability of inverse images of open setsq-continuous

Mathematics Subject Classification ID

Singular functions, Cantor functions, functions with other special properties (26A30) Foundations: limits and generalizations, elementary topology of the line (26A03) Topology of special sets defined by functions (54C50)

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