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    • Non-formalized theory

      • A naive theory in the sense of "naive set theory" is a non-formalized theory, that is, a theory that uses natural language to describe sets and operations on sets. Such theory treats sets as platonic absolute objects.
      en.wikipedia.org › wiki › Naive_set_theory
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  2. Naive set theory is any of several theories of sets used in the discussion of the foundations of mathematics. Unlike axiomatic set theories, which are defined using formal logic, naive set theory is defined informally, in natural language.

  3. May 2, 2024 · In naive set theory, a set is a collection of objects (called members or elements) that is regarded as being a single object. To indicate that an object x is a member of a set A one writes x ∊ A, while x ∉ A indicates that x is not a member of A.

  4. 6 days ago · A branch of mathematics which attempts to formalize the nature of the set using a minimal collection of independent axioms. Unfortunately, as discovered by its earliest proponents, naive set theory quickly runs into a number of paradoxes (such as Russell's antinomy), so a less sweeping and more formal theory known as axiomatic set theory must ...

  5. Formal Methods: Set Theory 1.1 Naive Set Theory. Johns Hopkins University, Fall 2017. The Naive Concept of a Set. (Pseudo) Def 1.1.1. A set is a collection of elements. Examples: f5;7;Platog fx jx is a Canadian citizeng, or, alternatively, fx : x is a Canadian citizeng ff5;7g;fPlatog;Platog N = fn jn is a natural numberg= f0;1;2;:::g N.B.

  6. About this book. Every mathematician agrees that every mathematician must know some set theory; the disagreement begins in trying to decide how much is some. This book contains my answer to that question. The purpose of the book is to tell the beginning student of advanced mathematics the basic set­ theoretic facts of life, and to do so with ...

  7. Mar 6, 2011 · Discrete Mathematics/Naive set theory. < Discrete Mathematics. When we talk of set theory, we generally talk about collections of certain mathematical objects. In this sense, a set can be likened to a bag, holding a finite (or conceivably infinite) amount of things. Sets can be sets of sets as well (bags with bags in them).

  8. Naive set theory as a conceptual mathematical language. What is a set? Founding mathematics in intuition. Naive set theory or “potato science” is the natural (and understandable!) foundation of mathematical science. “I know what time is. If you ask me, I don’t know anymore.” Augustine.

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