In this paper we introduce the concepts of upper and lower weakly B*continuous multifunction, and obtain some characterizations and several properties concerning upper and lower B*-continuous as well as upper and lower weakly B*continuous multifunction. The relationship between these multifunctions and their graphs are investigated.

Hearing impairment is becoming increasingly prevalent. Even though hearing aids can contribute to increased quality of life, actual usage has proven to be problematic and limited. This preliminary explorative study has been carried out in order to get an initial understanding about sharing of hearing-lossrelated information, both in terms of how information is shared as well as what kind of inf...

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In this paper, the concept of completely N-continuous multifunction is defined and their basic characterizations and properties are obtained.

The spaces for which each δ-continuous function can be extended to a 2δ-small point-open l.s.c. multifunction (resp. point-closed u.s.c. multifunction) are studied. Some sufficient conditions and counterexamples are given.