1. Que désigne la notation \(\mathrm{sign}(0)\) ?
2. Quelle est la fonction principale du symbole de Kronecker δ dans les mathématiques ?
3. Quel ensemble représente la notation \(\{n,\dots,p\}\) lorsque \(n\le p\) ?
Ensembles N,Z,Q,R,C
N, Z, Q, R, C désignent entiers naturels, relatifs, rationnels, réels, complexes.
Ensembles N, Z, Q, R, C
Entiers naturels, relatifs, rationnels, réels, complexes.
Notation K∈{Q,R,C}
K désigne l’un des corps Q, R ou C.
Corps K
Q, R ou C, selon le contexte.
Intervalle [n,p]∩N
Entiers de n à p, inclus.
Application F(E,F)
Ensemble des fonctions de E vers F.
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