Sotūde-nāme (1). Pažūheš-hā-ye īrānšenāsī, Nāmvāre-ye doctor Maḥmūd Afšār. Vol. 15, 1384/2005, 542 p. [Recherches d’iranologie. A la mémoire du docteur Maḥmūd Afšār]

a la mémoire du docteur louis delpy

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Seek and Ye Shall Find

This chapter proposes that search engines apply a verticalizing pressure on the WWW many-to-many information distribution model, forcing this to revert to a distributive model similar to that of the mass media. The argument for this starts with a critical descriptive examination of the history of search mechanisms for the Internet. Parallel to this there is a discussion of the increasing ties b...

Mémoire d ' Habilitation à Diriger les Recherches

Security is a very old concern, which until quite recently was mostly of interest for military purposes. The deployment of electronic commerce changes this drastically. The security of exchanges is ensured by cryptographic protocols which are notoriously error prone. The formal veri cation of cryptographic protocols is a di cult problem that can be seen as a particular model-checking problem in...

On the modular curves YE(7)

Let E denote an elliptic curve over Q and Y E (7) the modular curve classifying the elliptic curves E over Q such that the representations of Gal(Q/Q) in the 7-torsion points of E and of E are symplectically isomorphic. In case E is given by a Weierstraß equation such that the c 4 invariant is a square, we exhibit here nontrivial points of Y E (7)(Q). From this we deduce an infinite family of c...