- positive homothety
- мат. положительная гомотетия
Большой англо-русский и русско-английский словарь. 2001.
positive homothety
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Dilation (mathematics) — In mathematics, a dilation is a function fnof; from a metric space into itself that satisfies the identity:d(f(x),f(y))=rd(x,y) ,for all points x , y , where d ( x , y ) is the distance from x to y and r is some positive real number. In Euclidean … Wikipedia
Dilation (metric space) — In mathematics, a dilation is a function f from a metric space into itself that satisfies the identity for all points (x,y) where d(x,y) is the distance from x to y and r is some positive real number. In Euclidean space, such a dilation is a… … Wikipedia
