On the commutativity of two projections.
Rehder, Wulf
Elemente der Mathematik, Tome 35 (1980), p. 120-122 / Harvested from Göttinger Digitalisierungszentrum
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Publié le : 1980-01-01
EUDML-ID : urn:eudml:doc:141250 
@article{GDZPPN002080133,
     title = {On the commutativity of two projections.},
     journal = {Elemente der Mathematik},
     volume = {35},
     year = {1980},
     pages = {120-122},
     zbl = {0415.47002},
     url = {http://dml.mathdoc.fr/item/GDZPPN002080133}
}

Rehder, Wulf. On the commutativity of two projections.. Elemente der Mathematik, Tome 35 (1980) pp. 120-122. http://gdmltest.u-ga.fr/item/GDZPPN002080133/