We establish new estimates to compute the λ-function of Aron and Lohman on the unit ball of a JB*-triple. It is established that for every Brown–Pedersen quasi-invertible element a in a JB*-…
بواسطة
Haifa M. Tahlawi, Akhlaq A. Siddiqui , Antonio M. Peralta c, Fatmah B. Jamjoom
We introduce and study the class of extremally rich JB∗-triples. We establish new results to determine the distance from an element a in an extremally rich JB∗-triple E to the set ∂e(E1) of all…
بواسطة
Fatmah B. Jamjoom, Haifa M. Tahlawi, Akhlaq A. Siddiqui , Antonio M. Peralta
The aim of this note is to study Cebyšëv JB*-subtriples of general JB*-triples. It is established that if F is a non-zero Cebyšëv JB*-subtriple of a JB*-triple E, then exactly one of the following…
بواسطة
Haifa M. Tahlawi, Akhlaq A. Siddiqui , Antonio M. Peralta c, Fatmah B. Jamjoom