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Modify search criterions Results n° 1 to 8 of 173 matches
| Title |
L'arbre factoriel |
| Author |
Collectif , (Réalisation Rossi Raoul) |
| Keywords |
Arrangement, Factorielle, Tree |
| Topics |
Combinatorics, Pedagogy, Probabilities, Récurrence, Statistics |
| Abstract |
Film d'animation de 1959 (4 minutes, muet) introduisant la notion de factorielle d'un nombre et son calcul. |
| Number |
1183, Fall 2008, special issue: Video flashback |
| Language |
French |
| Title |
A note on the manipulation of social choice correspondences |
| Author |
TCHANTCHO Bertrand, DIFFO LAMBO Lawrence |
| Keywords |
Linked domain, Manipulation, Non manipulable, p-social choice correspondence |
| Topics |
Combinatorics, Decision Theory, Game Theory, Social choice, Voting |
| Abstract |
We study the manipulability of social choice rules which select a fixed number of candidates for any given profile of preferences. Using a recent generalization by Aswal et al [2003] of the well known Gibbard [1973], Satterthwaite [1975] theorem, we show (under the mild condition of unanimity) such rules are strategy proof only if they are dictatorial. |
| Number |
186, Summer 2009 |
| Language |
English | Read the article
| Title |
Characterization of Quenines and their spiral representation |
| Author |
DUMAS Jean-Guillaume |
| Keywords |
Perecquine, Primitive root, Queneau-Daniel permutation, Quenine, Spiral |
| Topics |
Combinatorics, Linguistics, Number theory, Permutations |
| Abstract |
The Raymond Queneau numbers are the integers n for which the quenine (the spiral permutation sending even numbers to their halves and odd numbers to their opposites added to n) is of order n. In this note, we study the characterization of Queneau numbers, since previous charac-terizations one, to our knowledge incomplete. We also propose a new graphical representation, of spiral shape, both of the quenines with primitive root distinct from 2 and of the spinines, which generalize quenines by Jacques Roubaud's erasing technique. We then extend this representation to pérecquines. |
| Number |
184, Winter 2008 |
| Language |
French | Read the article
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