We present new results related to various equivalents of the mixed-type reverse order law for the Moore-Penrose inverse for operators on Hilbert spaces. Recent finite-dimensional results of Tian are extended to Hilbert space operators.
@article{bwmeta1.element.bwnjournal-article-doi-10_4064-sm204-2-2, author = {Neboj\v sa \v C. Din\v ci\'c and Dragan S. Djordjevi\'c and Dijana Mosi\'c}, title = {Mixed-type reverse order law and its equivalents}, journal = {Studia Mathematica}, volume = {204}, year = {2011}, pages = {123-136}, zbl = {1223.47003}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm204-2-2} }
Nebojša Č. Dinčić; Dragan S. Djordjević; Dijana Mosić. Mixed-type reverse order law and its equivalents. Studia Mathematica, Tome 204 (2011) pp. 123-136. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-doi-10_4064-sm204-2-2/