Just small Sunday's evening addition: If we put brackets we get this(∄(Philosopher) ⊇ ∂(Person))i.e. we have two unary modifiers (∄ ∂) of unary predicates (concepts) into something that can be modified by the binary operator ⊇ to create a proposition.Very interesting.вс, 16 февр. 2025 г. в 14:42, alex.shkotin <alex.s...@gmail.com>:by the way " ∄Philosopher ⊇ ∂Person" [1] is not a FOL, but HOL like this∃p:unary_predicate, ∃x:Person p≠Philosopher ∧ p(x)
[1] https://patternslanguage.com/articles/f/unifying-logic-traditional-premises-and-classical-propositionsпятница, 14 февраля 2025 г. в 17:29:39 UTC+3, Gregory Sharp:ꓱPhilosopher ⊇ ∂Person is a label given to the central occasion of a 9 occasion pattern that follows the general form of a logical statement. This particular statement is analogous to an Aristotelian I-premise which can be rendered in English as "some person is a philosopher". The general form of a logical statement requires quantification of both of its terms and a copula. The copula here is called "predication". There are three other copulas. The concept philosopher is existentially quantified. The concept person is partially quantified. There are two other quantifiers used in the analogous Aristotelian system. They are universal and non-existential quantification. There are six additional quantifiers in pattern logic. The four copulas and ten quantifiers set the boundaries for pattern logic "proper" in the ADEPT LION "first consideration" which encapsulates the "grammar" of the broader pattern language. The second consideration is the vocabulary and the third consideration is the syntax.
From the standpoint of pattern logic, "wife" is a concept, or a non-logical term.
GregOn Fri, Feb 14, 2025, 4:28 AM Alex Shkotin <alex.s...@gmail.com> wrote:Just FYI:"17.02.2025, jointly with S.I. Adian seminar Alexei Miasnikov (Stevens Institute of Technology): First-order classification, non-standard models, and interpretationsIn this talk I will focus on three things:
1. First-order classification: in particular, how one can describe ALL groups which are first-order equivalent to a given one.
2. Non-standard models of groups: in particular, I will describe non-standard models of the finitely generated groups with decidable or recursively enumerable (or arithmetic) word problems and explain how they naturally appear as non-standard Z-points of the general algebraic schemes.
3. Theory of interpretations: it seems a new rich theory is emerging right now. I will show several interesting results based on interpretations."Enjoy,Alex