pullback
Meanings
Examples :
Examples :
"The diagram illustrating how related students choose the same elective course can be visualized as a pullback, showing the most specific way two selections lead to a common class. "
Le diagramme illustrant comment des étudiants apparentés choisissent le même cours optionnel peut être visualisé comme un repli, montrant la manière la plus spécifique dont deux sélections mènent à une classe commune.
Tirage en arrière
Within a Cartesian square (which has a pair of divergent morphisms and a pair of convergent morphisms) the divergent morphism which is directly opposite to a given one of the convergent morphisms, said to be “along” the convergent morphism which is between that pair of opposite morphisms. (The pullback is said to be “of” the given morphism.)