Complementary Algorithms For Tableaux

We study four operations defined on pairs of tableaux. Algorithms for the first three involve the familiar procedures of jeu de taquin, row insertion, and column insertion. The fourth operation, hopscotch, is new, although specialised versions have appeared previously. Like the other three operations, this new operation may be computed with a set of local rules in a growth diagram, and it preserves Knuth equivalence class. Each of these four operations gives rise to an a priori distinct theory of dual equivalence. We show that these four theories coincide. The four operations are linked via the involutive tableau operations of complementation and conjugation.Comment: 29 pages, 52 .eps files for figures, JCTA, to appea

The argan tree and its Tashelhiyt Berber lexicon

Berber Taalkund

Damsīrī

Aṛ-ṛays al-ḥajj Muhamad ibn Laḥsen ad-Damsiri fut l’un des plus important chanteurs-poètes traditionnels (ṛṛays, pluriel ṛṛways) contemporains dans la région du Maroc de parler tachelγiyt. Ce fils d’un boucher naquit en 1936 à Tamsoult dans la région de Demsira, mais il vécut la plus grande partie de sa vie à Casablanca. Son nom de famille était Ajaḥud. Il reçut un enseignement coranique en vue d’enseigner à son tour le Coran mais il ne professa jamais. Il commença à devenir célèbre en 1963 e..

In de schaduw van het Arabisch: Over niet-arabische talen en culturen in Noord-Afrika en het Midden-Oosten

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