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Une preuve elementaire d'un theoreme de thurston

✍ Scribed by J.P. Jouanolou

Publisher
Elsevier Science
Year
1978
Tongue
English
Weight
92 KB
Volume
17
Category
Article
ISSN
0040-9383

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Une preuve bijective d'une formule de Touchard-Riordan
✍ Jean-Guy Penaud 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 586 KB

We give a purely combinatorial proof of a formula derived by Riordan from a result of Touchard. This proof involves a sequence of bijections starting with involutions, passing through words, trees .... and ending with polynominoes satisfying the required property. ## Resum/~ Une preuve bijective