Negative solution of the decision problem for sentences true in every subalgebra of 〈N, +〉

Publisher: Cambridge University Press

E-ISSN: 1943-5886|36|4|607-609

ISSN: 0022-4812

Source: The Journal of Symbolic Logic, Vol.36, Iss.4, 1971-12, pp. : 607-609

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Abstract