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Browsing by Author "Singh, D."

Now showing items 1-10 of 10

Almost cl-supercontinuous functions

Kohli, J.K.; Singh, D. (Universitat Politècnica de València, 2009-04-01)

[EN] Reilly and Vamanamurthy introduced the class of ‘clopen maps’ ( ‘cl-supercontinuous functions’). Subsequently generalizing clopen maps, Ekici defined and studied almost clopen maps( almost cl-supercontinuous functions). ...
Between continuity and set connectedness

Kohli, J.K.; Singh, D.; Kumar, Rajesh; Aggarwal, Jeetendra (Universitat Politècnica de València, 2010-04-01)

[EN] Two new weak variants of continuity called 'R-continuity'and 'F-continuity' are introduced. Their basic properties are studied and their place in the hierarchy of weak variants of continuity, that already exist in the ...
Between strong continuity and almost continuity

Kohli, J.K.; Singh, D. (Universitat Politècnica de València, 2010-04-01)

[EN] As embodied in the title of the paper strong and weak variants of continuity that lie strictly between strong continuity of Levine and almost continuity due to Singal and Singal are considered. Basic properties of ...
cl-Supercontinuous Functions

Singh, D. (Universitat Politècnica de València, 2007-10-01)

[EN] Basic properties of cl-supercontinuity, a strong variant of continuity, due to Reilly and Vamanamurthy [Indian J. Pure Appl. Math., 14 (1983), 767–772], who call such maps clopen continuous, are studied. Sufficient ...
F-supercontinuous functions

Kohli, J.K.; Singh, D.; Aggarwal, Jeetendra (Universitat Politècnica de València, 2009-04-01)

[EN] A strong variant of continuity called ‘F-supercontinuity’ is introduced. The class of F-supercontinuous functions strictly contains the class of z-supercontinuous functions (Indian J. Pure Appl. Math. 33 (7) (2002), ...
Function Spaces and Strong Variants of Continuity

Kohli, J.K.; Singh, D. (Universitat Politècnica de València, 2008-04-01)

[EN] It is shown that if domain is a sum connected space and range is a T0-space, then the notions of strong continuity, perfect continuity and cl-supercontinuity coincide. Further, it is proved that if X is a sum connected ...
Generalizations of Z-supercontinuous functions and Dδ-supercontinuous functions

Kohli, J.K.; Singh, D.; Kumar, Rajesh (Universitat Politècnica de València, 2008-10-01)

[EN] Two new classes of functions, called ‘almost z-supercontinuous functions’ and ’almost Dδ-supercontinuous functions’ are introduced. The class of almost z-supercontinuous functions properly includes the class of ...
Pseudo perfectly continuous functions and closedness/compactness of their function spaces

Kohli, J.K.; Singh, D.; Aggarwal, Jeetendra; Rana, Manoj (Universitat Politècnica de València, 2013-04-01)

[EN] A new class of functions called 'pseudo perfectly continuous' functions is introduced. Their place in the hierarchy of variants of continuity which already exist in the literature is highlighted. The interplay between ...
Red emitting MTiO3 (M = Ca or Sr) phosphors doped with Eu3+ or Pr3+ with some some cations as co-dopants

Marí Soucase, Bernabé; Singh, Krishan Chander; Cembrero Coca, Paula; Singh, I.; Singh, D.; Chand, S. (Elsevier, 2013-10)

[EN] Ca (or Sr)TiO3:Eu3+ , M (Li + or Na+ or K+ ) and CaTiO3:Pr 3+ , M (Li + or Na+ or Ag+ or K+ or Gd3+ or La3+ ) powders were prepared by combustion synthesis method and the samples were further heated to !1000 ...
Synthesis and enhanced luminescent characterization of SrAl4O7:Eu2+,RE3+ (RE= Nd, Dy) nanophosphors for light emitting applications

Singh, D.; Tanwar, V.; Samantilleke, Anura; Marí, B.; Singh Kadyan, P.; Singh, Krishan Chander (Springer Verlag (Germany), 2016-11)

[EN] SrAl4O7:Eu2+,RE3+ (RE = Nd, Dy) nanophosphors were efficiently synthesized with a facile fast gel com- bustion procedure in presence of air. During the synthesis process, urea was used as an organic fuel. Boric acid ...