- parabolic projectivity
- мат.параболическая проективность
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Dual number — For dual grammatical number found in some languages, see Dual (grammatical number). In linear algebra, the dual numbers extend the real numbers by adjoining one new element ε with the property ε2 = 0 (ε is nilpotent). The collection of dual… … Wikipedia