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A Note on Direct Products and Ultraproducts of Logical Matrices

Jan Zygmunt
Studia Logica: An International Journal for Symbolic Logic
Vol. 33, No. 4 (1974), pp. 349-357
Published by: Springer
Stable URL: http://www.jstor.org/stable/20014730
Page Count: 9
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A Note on Direct Products and Ultraproducts of Logical Matrices
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Abstract

In this contribution we shall characterize matrix consequence operation determined by a direct product and an ultraproduct of a family of logical matrices. As an application we shall describe finite consequence operations with the help of ultrapowers.

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