phrase "well-ordering principle" is sometimes taken to be synonymous with the "well-ordering theorem", according to which every set can be well-ordered. On...
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In mathematics, a well-order (or well-ordering or well-order relation) on a set S is a total ordering on S with the property that every non-empty subset...
12 KB (1,902 words) - 19:06, 15 May 2025
well-ordering theorem to be a "fundamental principle of thought". However, it is considered difficult or even impossible to visualize a well-ordering...
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Mathematical induction (redirect from Principle of mathematical induction)
with the induction principle uniquely model the natural numbers. Replacing the induction principle with the well-ordering principle allows for more exotic...
47 KB (6,914 words) - 03:09, 21 June 2025
the well-ordering principle. There are other interesting special cases of well-founded induction. When the well-founded relation is the usual ordering on...
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Structural induction (section Well-ordering)
induction is equivalent to the well-ordering principle, structural induction is also equivalent to a well-ordering principle. If the set of all structures...
12 KB (1,750 words) - 11:32, 3 December 2023
Georg Cantor (redirect from Absolute infinite, well-ordering theorem, and paradoxes)
ordinals to add to it. In 1883, Cantor also introduced the well-ordering principle "every set can be well-ordered" and stated that it is a "law of thought". Cantor...
85 KB (10,164 words) - 19:54, 20 June 2025
In mathematics, specifically order theory, a well-quasi-ordering or wqo on a set X {\displaystyle X} is a quasi-ordering of X {\displaystyle X} for which...
18 KB (3,055 words) - 06:56, 10 May 2025
ultimately a contradiction. It is a method which relies on the well-ordering principle, and is often used to show that a given equation, such as a Diophantine...
15 KB (2,223 words) - 10:12, 24 December 2024
appropriate setting for the hyperreal transfer principle is the world of internal entities. Thus, the well-ordering property of the natural numbers by transfer...
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thought". The well-ordering principle is equivalent to the axiom of choice. Around 1895, Cantor began to regard the well-ordering principle as a theorem...
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Linear extension (redirect from Ordering principle)
the ordering principle, OP, and is a weakening of the well-ordering theorem. However, there are models of set theory in which the ordering principle holds...
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positive integers, it has a minimum element d = as + bt, by the well-ordering principle. To prove that d is the greatest common divisor of a and b, it...
12 KB (1,680 words) - 04:03, 20 February 2025
Zorn's lemma (category Order theory)
(in ZF) to three main results: Hausdorff maximal principle Axiom of choice Well-ordering theorem. A well-known joke alluding to this equivalency (which...
32 KB (4,665 words) - 21:22, 30 June 2025
{\displaystyle q} and r {\displaystyle r} . Other proofs use the well-ordering principle (i.e., the assertion that every non-empty set of non-negative integers...
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Applied Mathematics. The Axiom of Choice is obviously true, the well-ordering principle obviously false, and who can tell about Zorn's lemma? This is a...
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Here, for any given computable number x , {\displaystyle x,} the well ordering principle provides that there is a minimal element in S {\displaystyle S}...
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has the same cardinality as some ordinal; this statement is the well-ordering principle. It is however possible to discuss the relative cardinality of...
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Bernoulli's principle is a key concept in fluid dynamics that relates pressure, speed and height. For example, for a fluid flowing horizontally Bernoulli's...
75 KB (10,219 words) - 19:44, 23 May 2025
The uncertainty principle, also known as Heisenberg's indeterminacy principle, is a fundamental concept in quantum mechanics. It states that there is...
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observes the mediocrity principle, the anthropic principle, the principle of relativity and the cosmological principle. Other well-known principles include...
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The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity) states that for many outcomes, roughly...
24 KB (2,802 words) - 13:41, 24 June 2025
In mathematics, especially order theory, a weak ordering is a mathematical formalization of the intuitive notion of a ranking of a set, some of whose...
30 KB (4,360 words) - 12:57, 6 October 2024
index finite total orders or well orders with order type ω by natural numbers in a fashion which respects the ordering (either starting with zero or...
22 KB (3,147 words) - 10:51, 4 June 2025
well-ordering A well-ordering is a well founded relation, usually also assumed to be a total order well-ordering principle that the positive integers are well-ordered...
91 KB (11,628 words) - 12:22, 21 March 2025
Kruskal's tree theorem (category Order theory)
1016/0168-0072(91)90022-E. MR 1129778. Kruskal, J. B. (May 1960). "Well-Quasi-Ordering, The Tree Theorem, and Vazsonyi's Conjecture" (PDF). Transactions...
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Partially ordered set (redirect from Partial ordering relation)
contained in some total order. Stochastic dominance – Partial order between random variables Strict weak ordering – strict partial order "<" in which the relation...
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circular ordering (Mosher 1996, p. 109). Some authors call such an ordering a total cyclic order (Isli & Cohn 1998, p. 643), a complete cyclic order (Novák...
53 KB (6,392 words) - 21:38, 23 April 2025
Order theory is a branch of mathematics that studies various kinds of objects (often binary relations) that capture the intuitive notion of ordering, providing...
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Occam's razor (redirect from Principle of parsimony)
problem-solving principle that recommends searching for explanations constructed with the smallest possible set of elements. It is also known as the principle of parsimony...
94 KB (10,888 words) - 04:10, 2 July 2025