Mathematical Reports, Volume (22), No (4), Year (2020-12) , Pages (245-260)
Title : ( Approximately dual frames in Banach spaces via semi-inner products )
Authors: vahid reza morshedi , Mohammad Janfada ,File:
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Abstract
In this paper, we develop the concept of dual and approximately dual frames in Banach spaces via semi-inner products and some properties of dual and approximate dual frames are investigated. Also, we introduce g-dual frames in these spaces and some relationships between g-duals and approximate duals are stated. Finally, the -nearly g-dual frames and their relations with g-duals are studied in Banach spaces using semi-inner products.