The purpose of this note is to provide characterizations of operator convexity and give an alternative proof of a two-dimensional analogue of a theorem of Löwner concerning operator monotonicity.
@article{bwmeta1.element.bwnjournal-article-apmv62z1p1bwm,
author = {Jaspal Singh Aujla and H. L. Vasudeva},
title = {Convex and monotone operator functions},
journal = {Annales Polonici Mathematici},
volume = {62},
year = {1995},
pages = {1-11},
zbl = {0859.15006},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-apmv62z1p1bwm}
}
Jaspal Singh Aujla; H. L. Vasudeva. Convex and monotone operator functions. Annales Polonici Mathematici, Tome 62 (1995) pp. 1-11. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-apmv62z1p1bwm/
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