DR. UJJWAL KUMAR DEB Professor Department of Mathematics of Mathematics Chittagong University of Engineering & Technology (CUET) Chittagong-4349, Bangladesh. Email:ukdebmath@cuet.ac.bd, web: https://www.cuet.ac.bd/members/97#
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DR. UJJWAL KUMAR DEB Professor Department of Mathematics of Mathematics Chittagong University of Engineering & Technology (CUET) Chittagong-4349, Bangladesh. Email:ukdebmath@cuet.ac.bd, web: https://www.cuet.ac.bd/members/97#
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