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Submitted on 20 Nov 2012
HAL is a multi-disciplinary open access L’archive ouverte pluridisciplinaire HAL, est
Ψ(L) = {Ψ (w) | w ∈ L} M ⊆ Nk M = {v 0+! m i=1vixi | xi ∈ N} v0, v1, ..., vm Nk Ψ(L)
RE, CS, CF, LIN, REG
F IN
F IN ⊂ REG ⊂ LIN ⊂ CF ⊂ CS ⊂ RE
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