We examine multiphoton production in the electroweak sector of the Standard Model in the high energy limit using the equivalence theorem in combination with spinor helicity techniques. We obtain recursion relations for currents consisting of a charged scalar, spinor, or vector line that radiates n photons. Closed form solutions to these recursion relations for arbitrary n are presented for the ...

We describe a prototype system which induces a categorial grammar from a simple text corpus of children's reading books. Unlike previous attempts at grammar induction, (I) there are no rules of grammar, only a richly structured lexicon; (2) we rely both on an informing linguistic theory and on statistical methods applied to a corpus. 1 I n t r o d u c t i o n L e a r n i n g a