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P-, I-, g-, and D-Angles in Normed Spaces
Hendra Gunawan, Janny Lindiarni & Oki Neswan
Analysis and Geometry Group, Faculty of Mathematics and Natural Sciences
Institute of Technology Bandung, Bandung 40132, Indonesia
Abstract. The notion of angles is known in a vector space equipped with an inner product, but not well established in a vector space equipped only with a norm. In this note, we shall develop some notions of angles between two vectors in a normed space and discuss their properties.
Keywords: angles; inner product spaces; normed spaces; orthogonality
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