Pinky  , T.P.  Johnson, 
    On the Number of Ultra L-topologies in the Lattice of L-topologies,
    Journal of Engineering and Applied Sciences,
    Volume 13,Issue 12,
    2018,
    Pages 4438-4441,
    ISSN 1816-949x,
    jeasci.2018.4438.4441,
    (https://makhillpublications.co/view-article.php?doi=jeasci.2018.4438.4441)
    Abstract: In this study, we investigate ultra L–topologies (dual atoms) in the lattice FX of all L–topologies on
a given non empty set X when membership lattice L is a complete atomic Boolean lattice. All the ultra
L–topologies and their number in the lattice FX are determined.
    Keywords: L-topology;lattice;;complete atomic Boolean;lattice;ultra L-topology;membership;Boolean lattice