Аннотация:
Получено новое уточнение неравенства треугольника в нормированных линейных пространствах. Кроме того, введено понятие косоугольного расстояния, позволившее получить простую характеризацию пространств со скалярным произведением.
Библиография: 6 названий.
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Rooin J., Rajabi S., Moslehian M.S., “Extensions of P-Angular Distance Inequalities in Normed Spaces”, Ric. Mat., 2021
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Rajabi S., “Best Approximation and Characterization of Hilbert Spaces”, Miskolc Math. Notes, 20:2 (2019), 1167–1173
Rooin J., Rajabi S., Moslehian M.S., “Extension of Dunkl-Williams Inequality and Characterizations of Inner Product Spaces”, Rocky Mt. J. Math., 49:8 (2019), 2755–2777
Taba D.A., Dehghan H., “Operator Inequalities Related to P-Angular Distances”, Filomat, 33:7 (2019), 2107–2111
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