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Published online by Cambridge University Press: 29 June 2016
In this work we study an abstract formulation of a problem posed by J.M. Dunn, T.J. Hagge et al. about the inclusion of varieties generated by the modular ortholattice of subspaces of ℂn . We shall prove that, this abstract formulation is equivalent to the direct irreducibility for atomic complete modular ortholattices.