- incidence preserving
- мат.сохраняющий инцидентность
English-Russian scientific dictionary. 2008.
English-Russian scientific dictionary. 2008.
Duality (mathematics) — In mathematics, a duality, generally speaking, translates concepts, theorems or mathematical structures into other concepts, theorems or structures, in a one to one fashion, often (but not always) by means of an involution operation: if the dual… … Wikipedia
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