Instrumental
发表于 2025-3-28 14:39:19
Validity,theory. A . is a collection of things, called its .. We will write . ∈ . to say that . is an element of ., and .∉. to say that . is not an element of .. The main thing to bear in mind about sets is that their identity is determined by their elements. If . and . have the same elements, then . = .. Th
NOTCH
发表于 2025-3-28 19:48:10
The Symbols of Predicate Logic, expressions. .. has a denumerable set of . ., ., .…, which represent singular terms, and a denumerable set of . ., ., .…, which represent predicates. Each predicate letter has . places, for some .. One-place predicate letters represent monadic predicates, that is, predicates that apply to single ob
fastness
发表于 2025-3-29 00:30:20
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结束
发表于 2025-3-29 03:30:00
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Affectation
发表于 2025-3-29 08:40:37
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支柱
发表于 2025-3-29 14:50:02
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不愿
发表于 2025-3-29 15:47:25
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致词
发表于 2025-3-29 22:35:22
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bile648
发表于 2025-3-30 03:44:03
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UNT
发表于 2025-3-30 04:31:49
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