Large cardinals

Reflecting cardinal

In set theory, a mathematical discipline, a reflecting cardinal is a cardinal number κ for which there is a normal ideal I on κ such that for every X∈I+, the set of α∈κ for which X reflects at α is in I+. (A stationary subset S of κ is said to reflect at α<κ if S∩α is stationary in α.)Reflecting cardinals were introduced by. Every weakly compact cardinal is a reflecting cardinal, and is also a limit of reflecting cardinals.The consistency strength of an inaccessible reflecting cardinal is strictly greater than a greatly Mahlo cardinal, where a cardinal κ is called greatly Mahlo if it is κ+-Mahlo. An inaccessible reflecting cardinal is not in general Mahlo however, see https://mathoverflow.net/q/212597. (Wikipedia).

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How Exactly Do Telescopes See Distant Galaxies?

Episode 1 of 5 Check us out on iTunes! http://testtube.com/podcast Please Subscribe! http://testu.be/1FjtHn5 You've probably looked through a telescope and gazed at far away celestial bodies like the moon and other planets, but how exactly does that device bring those things to yo

From playlist Telescopes Are Constantly Changing Our View Of The Universe

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Ex: Reflect a Point about the x-axis, y-axis, and the Origin

This video provides an example of how to determine the coordinates of a point reflected about the x-axis, y-axis, and the origin. Site: http://mathispower4u.com

From playlist Determining Transformations of Functions

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Astronomy - Ch. 6: Telescopes (11 of 25) The Newtonian Reflecting Telescope

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From playlist ASTRONOMY 6 TELESCOPES

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Light and Optics 1_3 Introduction to Reflection

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From playlist Physics - Light and Optics

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Light and Optics 1_2 Introduction to Reflection

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From playlist Physics - Light and Optics

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From playlist Demos 25. The Reflection of Light: Mirrors

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Laura Fontanella: Reflection of stationary sets and the tree property at ℵω2+1

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From playlist Logic and Foundations

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Counting Woodin cardinals in HOD

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From playlist Distinguished Visitors Lecture Series

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Dima Sinapova : Prikry type forcing and combinatorial properties

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Matthew Foreman: Welch games to Laver ideals

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From playlist Logic and Foundations

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Assaf Rinot: Chain conditions, unbounded colorings and the C-sequence spectrum

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Defining Infinity | Infinite Series

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The Fundamental Patterns that Explain the Universe - with Brian Clegg

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From playlist Ri Talks

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GT18.1. Class Equation for Dihedral Groups

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From playlist Abstract Algebra

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Mirrors - Why don’t we see reflections in white objects?

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From playlist Physics

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Vic Reiner, Lecture II - 11 February 2015

Vic Reiner (University of Minnesota) - Lecture II http://www.crm.sns.it/course/4036/ Many results in the combinatorics and invariant theory of reflection groups have q-analogues for the finite general linear groups GLn(Fq). These lectures will discuss several examples, and open questions

From playlist Algebraic topology, geometric and combinatorial group theory - 2015

Related pages

Stationary set | Set theory | Mahlo cardinal | List of large cardinal properties | Ideal (set theory) | Weakly compact cardinal