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2. Rz-supercontinuous functions
- Creator:
- Singh, Davinder, Tyagi, Brij Kishore, Aggarwal, Jeetendra, and Kohli, Jogendra K.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- z-supercontinuous function, F-supercontinuous function, cl-supercontinuous function, Rz-supercontinuous function, R-supercontinuous function, rz-open set, rz-closed set, z-embedded set, Rz-space, and functionally Hausdorff space
- Language:
- English
- Description:
- A new class of functions called “Rz-supercontinuous functions” is introduced. Their basic properties are studied and their place in the hierarchy of strong variants of continuity that already exist in the literature is elaborated. The class of Rz-supercontinuous functions properly includes the class of Rcl-supercontinuous functions, Tyagi, Kohli, Singh (2013), which in its turn contains the class of cl-supercontinuous (≡ clopen continuous) functions, Singh (2007), Reilly, Vamanamurthy (1983), and is strictly contained in the class of Rδ-supercontinuous, Kohli, Tyagi, Singh, Aggarwal (2014), which in its turn is properly contained in the class of R-supercontinuous functions, Kohli, Singh, Aggarwal (2010).
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public
3. The hourly rates of shower meteors
- Creator:
- Ceplecha, Zd.
- Format:
- bez média and svazek
- Type:
- model:article and TEXT
- Subject:
- meteor statistics, shower meteors, and hourly rates
- Language:
- Czech
- Description:
- 1947: Lyrids, δ Aquarids, Perseids, γ Draconids, Orionids, Leonids, Geminids; 1948: δ Aquarids, Perseids, γ Draconids. The hourly rates of Czechoslovak observations of shower meteors are given in this paper. The reduction was done by means of personal coefficients. The hourly rates and other quantities are contained in tables.
- Rights:
- http://creativecommons.org/publicdomain/mark/1.0/ and policy:public