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Everything about Regular cardinal
Type of cardinal number in mathematics
In set theory, a regular cardinal is a cardinal number that is equal to its own cofinality. More explicitly, this means that is a regular cardinal if and only if every unbounded subset has cardinality. Infinite well-ordered cardinals that are not regular are called singular cardinals. Finite cardinal numbers are typically not called regular or singular. Wikipedia →
🧭 Start here: a 6-step reading path
- Read the overview: Regular cardinalA 5-minute orientation
- Pick up a classic book: BibleThe most-reprinted book on the subject
- Read the landmark paper: On the convergence of regular families of cardinal interpolatorsCited 14 times
- Go sideways: Limit cardinalA closely related topic
- Go sideways: First uncountable ordinalA closely related topic
📖 Definitions
No dictionary entry for this exact phrase.
🗂️ The subject at a glance
🏆 Landmark papers (most cited)
On the convergence of regular families of cardinal interpolators
Products of regular cardinals and cardinal invariants of products of Boolean algebras
The first measurable cardinal can be the first uncountable regular cardinal at any successor height
ON CONFIGURATIONS CONCERNING CARDINAL CHARACTERISTICS AT REGULAR CARDINALS
PI-1-1 NORMAL FORM IN A REGULAR CARDINAL
The Congruences on a Transformation Semigroup Determined by a Regular Cardinal
📚 Books worth reading
BibleBible · 1200
Catholic BeliefJoseph Faà Di Bruno, L. A. Lambert · 1848
Saint Clare of AssisiErnest Gilliat-Smith · 1914
The life of Cardinal XimenezKarl Joseph von Hefele · 1860
The Roman courtBaart, Peter A., 1855-1908 · 1895- 📕Ollendorff's new method of learning to read, write, and speak the French languageH. G. Ollendorff, J. L. Jewett · 1846
The first Hebrew bookArnold, Thomas Kerchever · 1851
The life of S. Camillus of LellisSanzio Cicatelli · 1850
Ranked by number of editions on Open Library, a rough measure of how lasting a book is.
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