Departamento de Ciências da Computação, Instituto de Matemática, Universidade Federal do Rio de Janeiro, P.O. Box 68530, 21945-970 Rio de Janeiro, RJ, Brazil. E-mail: collier@impa.br
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We provethat if n \geq 2 then A_nd cannot be a maximal left ideal of then-th Weyl algebra A_n over ℂ for almostevery operator d of degree 2 of A_n.