@article { Gutman20190721, author = "Gutman A.E.", title = "Boolean-valued universe as an algebraic system. I: Basic principles", journal = "Sib. Math. J.", year = "2019", volume = "60", number = "5", pages = "810--827", doi = "10.1134/S0037446619050057", annote = "The paper is devoted to the study of Boolean-valued algebraic systems of set-theoretic signature. The technique of partial elements of these systems is developed. Some formal apparatus is presented for using partial elements and Boolean-valued classes in the truth values of formulas. The predicative Boolean-valued classes are studied that admit quantification. Logical interrelations are described between the basic properties of Boolean-valued systems: the transfer, mixing, and maximum principles.", keywords = "Boolean-valued algebraic system, set theory, Boolean-valued analysis" }