Some aspects of the <i>n</i>-ary orthogonal and <i>b</i> <sub>(<i>α</i> <sub> <i>n</i> </sub>,<i>β</i> <sub> <i>n</i> </sub>)</sub>-best approximations of <i>b</i> <sub>(<i>α</i> <sub> <i>n</i> </sub>,<i>β</i> <sub> <i>n</i> </sub>)</sub>-hypermetric spaces over Banach algebras
Demonstratio Mathematica