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dc.contributor.authorSakwa, Cyprian O.
dc.date.accessioned2020-02-26T06:14:28Z
dc.date.available2020-02-26T06:14:28Z
dc.date.issued2020
dc.identifier.citationAsian Research Journal of Mathematics, 16(3): 1-7, 2020; Article no.ARJOM.53829en_US
dc.identifier.issn2456-477X
dc.identifier.urihttp://www.journalarjom.com/index.php/ARJOM/article/view/30176/56624
dc.identifier.urihttp://repository.seku.ac.ke/handle/123456789/5943
dc.descriptionhttps://doi.org/10.9734/arjom/2020/v16i330176en_US
dc.description.abstractThe concept of essential numerical range of an operator was dened and studied by Stamp i and Williams in 1972. Researchers generalised this idea of essential numerical range to a group of operators to the joint essential numerical range. In this paper, we consider the jointessential numerical range and show that the properties of the classical numerical range such as compactness also hold for the joint essential numerical range. Further, we show that the joint essential spectrum is contained in the joint essential numerical range by looking at the boundary of the joint essential spectrum.en_US
dc.language.isoenen_US
dc.subjectNumerical rangeen_US
dc.subjectjoint essential numerical rangeen_US
dc.subjectjoint essential spectrumen_US
dc.titleCertain Properties Involving the Joint Essential Numerical Rangesen_US
dc.typeArticleen_US
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