noun
infinitesimal transformation
Technical term in mathematics, used in contexts such as Lie groups and differential geometry.
リー群の無限小変換は、対応するリー代数の元として表される。
An infinitesimal transformation of a Lie group is represented as an element of the corresponding Lie algebra.
Compound of 無限小 (infinitesimal) and 変換 (transformation). The exact historical derivation is uncertain; the term is a modern mathematical calque.