Reference : Surjections
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Mathematics
http://hdl.handle.net/2268/107579
Surjections
French
[en] Surjections
Dupont, Pascal mailto [Université de Liège - ULg > HEC-Ecole de gestion de l'ULg : UER > UER Opérations >]
Dec-2011
Losanges
SBPMef
15
29-36
No
National
Mons
Belgique
[en] Combinatorics ; Induction ; Binomial coefficients
[fr] Combinatoire ; Récurrence ; Coefficients binomiaux
[en] A formula for the number of surjective mappings from a set with $a$ elements to a set with $b$ elements is proven in three different ways. The stress is put on methodology rather than on the result itself.
[fr] On démontre, de trois manières différentes, une formule donnant le nombre de surjections d'un ensemble à $a$ éléments dans un ensemble à $b$ éléments, en insistant davantage sur la méthodologie que sur le résultat.
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/107579

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