On product of projections
Moslehian, Mohammad Sal
Archivum Mathematicum, Tome 040 (2004), p. 355-357 / Harvested from Czech Digital Mathematics Library
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An operator with infinite dimensional kernel is positive iff it is a positive scalar times a certain product of three projections.

Publié le : 2004-01-01
Classification:  47A05,  47A68,  47B15 
@article{107919,
     author = {Mohammad Sal Moslehian},
     title = {On product of projections},
     journal = {Archivum Mathematicum},
     volume = {040},
     year = {2004},
     pages = {355-357},
     zbl = {1109.47302},
     mrnumber = {2129957},
     language = {en},
     url = {http://dml.mathdoc.fr/item/107919}
}

Moslehian, Mohammad Sal. On product of projections. Archivum Mathematicum, Tome 040 (2004) pp. 355-357. http://gdmltest.u-ga.fr/item/107919/

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