Browsing by Author "Sihwaningrum, Idha"

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    Orthogonality In 2-Normed Spaces Revisited
    (2016-02-17) Gunawan, Hendra; Mashadi; Gemawati, Sri; Nursupiamin; Sihwaningrum, Idha
    In this paper we discuss some existing notions of orthogonality in 2-normed spaces and their drawback. We also formulate new de¯nitions of orthogo- nality that improve the existing ones. In the standard 2-normed space, our notions of orthogonality coincide with the usual one.