bn:03259406n
Noun Concept
EL
προβολική ειδική ορθογώνια ομάδα  προβολική ορθογώνια ομάδα
EN
In projective geometry and linear algebra, the projective orthogonal group PO is the induced action of the orthogonal group of a quadratic space V = on the associated projective space P. Wikipedia
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