elementary equivalence
plural of biotrack
(logic) A relation between two structures which have the property that every first-order formula is valid in one structure if and only if it is valid in the other.
Alternative form of durmast oak, a species of tree.
An island in the United States Virgin Islands.
これらの構造は同型ではないが、ある構造で真となるすべての一階述語の式が他方でも真となるという関係、すなわち初等同値性を持っている。
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DiQt
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