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).
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
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
Astronomy - Ch. 6: Telescopes (11 of 25) The Newtonian Reflecting Telescope
Visit http://ilectureonline.com for more math and science lectures! In this video I will explain the Newtonian reflecting telescopes.
From playlist ASTRONOMY 6 TELESCOPES
Light and Optics 3_2 More on Reflection and Refraction
Polarization of reflected light.
From playlist Physics - Light and Optics
Light and Optics 1_3 Introduction to Reflection
Reflection from plane and spherical mirrors.
From playlist Physics - Light and Optics
Light and Optics 1_2 Introduction to Reflection
Reflection form plane and spherical mirrors
From playlist Physics - Light and Optics
Geometric Optics Intuition with Mirrors and Lenses Concave Convex Diverging Converging | Doc Physics
This video has it all. Seriously, all of it. But no math, and no ray tracing. But maybe you just want to understand. Who can blame you? Just look at the light in that thumbnail bending away from the normal to the surface as it exits the plastic. All of geometric optics with lenses st
From playlist Demos 25. The Reflection of Light: Mirrors
Laura Fontanella: Reflection of stationary sets and the tree property at ℵω2+1
Find this video and other talks given by worldwide mathematicians on CIRM's Audiovisual Mathematics Library: http://library.cirm-math.fr. And discover all its functionalities: - Chapter markers and keywords to watch the parts of your choice in the video - Videos enriched with abstracts, b
From playlist Logic and Foundations
Counting Woodin cardinals in HOD
Distinguished Visitor Lecture Series Counting Woodin cardinals in HOD W. Hugh Woodin Harvard University, USA and University of California, Berkeley, USA
From playlist Distinguished Visitors Lecture Series
Light and Optics 1_6 Introduction to Reflection
Reflection. Solved problems.
From playlist Physics - Light and Optics
Dima Sinapova : Prikry type forcing and combinatorial properties
Abstract: We will analyze consequences of various types of Prikry forcing on combinatorial properties at singular cardinals and their successors, focusing on weak square and simultaneous stationary reflection. The motivation is how much compactness type properties can be obtained at succes
From playlist Logic and Foundations
Matthew Foreman: Welch games to Laver ideals
Recorded during the meeting "XVI International Luminy Workshop in Set Theory" the September 16, 2021 by the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's Au
From playlist Logic and Foundations
Assaf Rinot: Chain conditions, unbounded colorings and the C-sequence spectrum
Recording during the meeting "15th International Luminy Workshop in Set Theory" the September 23, 2019 at the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent Find this video and other talks given by worldwide mathematicians on CIRM's A
From playlist Logic and Foundations
Defining Infinity | Infinite Series
Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Set theory is supposed to be a foundation of all of mathematics. How does it handle infinity? Learn through active problem-solving at Brilliant: https://brilliant.org/I
From playlist An Infinite Playlist
The Fundamental Patterns that Explain the Universe - with Brian Clegg
From the cosmic microwave background to Feynman diagrams - what are the underlying rules that work to create patterns of action, force and consequence that make up our universe? Brian's new book "Ten Patterns That Explain the Universe" is available now: https://geni.us/clegg Watch the Q&A:
From playlist Ri Talks
GT18.1. Class Equation for Dihedral Groups
Abstract Algebra: We consider the class equation for the dihedral groups D_2n. Conjugacy classes are computed, and we verify the cardinality equation using centralizers. To finish, we consider the partitions for normal subgroups. U.Reddit course materials available at http://ureddit.co
From playlist Abstract Algebra
Mirrors - Why don’t we see reflections in white objects?
Curved and shattered mirrors. Specular and diffuse reflection. My Patreon page is at https://www.patreon.com/EugeneK
From playlist Physics
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