noun which may take the genitive case particle 'no', noun
many-to-one
Technical term in mathematics and related fields describing a relationship where multiple elements map to a single element.
この関数は多対一の対応になっている。
This function is a many-to-one mapping.
多対一の関係を図で表してください。
Please illustrate the many-to-one relationship with a diagram.
Compound of 多 (many), 対 (versus, pair), and 一 (one), literally 'many versus one'. A straightforward technical coinage.