In mathematics, in the theory of finite groups, a Brauer tree is a tree that encodes the characters of a block with cyclic defect group of a finite group. In fact, the trees encode the group algebra up to Morita equivalence. Such algebras coming from Brauer trees are called Brauer tree algebras. described the possibilities for Brauer trees. (Wikipedia).
mandelbrot fractal animation 5
another mandelbrot/julia fractal animation/morph.
From playlist Fractal
The Beech is the latest addition to our collection of videos about trees, presented by ecologist Dr Markus Eichhorn. See them all at http://www.test-tube.org.uk/trees/
From playlist Guide to Trees & Plants
We look at the oak tree, and why our ecologist says it should lead to a new national holiday in the England. More at http://www.test-tube.org.uk/trees/
From playlist Guide to Trees & Plants
Our latest tree video deals with the Scots Pine. See the whole collection at http://www.test-tube.org.uk/trees/index.htm
From playlist Guide to Trees & Plants
This is a recreation of a short clip from a long form video showing six different ways to construct the Sierpinski triangle: https://youtu.be/IZHiBJGcrqI In this short, we shade odd entries of the Halayuda/Pascal triangle to obtain the Sierpinski triangle. Can you explain why this works?
From playlist Fractals
Bianca Viray, The Brauer group and the Brauer-Manin obstruction on K3 surfaces
VaNTAGe seminar, February 23, 2021
From playlist Arithmetic of K3 Surfaces
Francesca Balestrieri, The arithmetic of zero-cycles on products of K3 surfaces and Kummer varieties
VaNTAGe seminar, March 9, 2021
From playlist Arithmetic of K3 Surfaces
Tony Varilly Alvarado, Descent on K3 surfaces: Brauer group computations and challenges
VaNTAGe seminar March 23, 2021 License: CC-BY-NC-SA
From playlist Arithmetic of K3 Surfaces
Persistence of the Brauer-Manin obstruction under field extension - Viray - Workshop 2 - CEB T2 2019
Bianca Viray (University of Washington) / 27.06.2019 Persistence of the Brauer-Manin obstruction under field extension. We consider the question of when an empty Brauer set over the ground field gives rise to an empty Brauer set over an extension. We first consider the case of quartic d
From playlist 2019 - T2 - Reinventing rational points
More on cubic K3 categories - Daniel Huybrechts
Daniel Huybrechts March 10, 2015 Workshop on Chow groups, motives and derived categories More videos on http://video.ias.edu
From playlist Mathematics
CTNT 2020 - Topology and Diophantine Equations - David Corwin
The Connecticut Summer School in Number Theory (CTNT) is a summer school in number theory for advanced undergraduate and beginning graduate students, to be followed by a research conference. For more information and resources please visit: https://ctnt-summer.math.uconn.edu/
From playlist CTNT 2020 - Conference Videos
Stefan Kebekus : Failure of the Brauer-Manin obstruction for a simply connected fourfold, and...
Almost one decade ago, Poonen constructed the first examples of algebraic varieties over global fields for which Skorobogatov’s etale Brauer-Manin obstruction does not explain the failure of the Hasse principle. By now, several constructions are known, but they all share common geometric f
From playlist Algebraic and Complex Geometry
Are spotty fruits and vegetables safe to eat? - Elizabeth Brauer
View full lesson: http://ed.ted.com/lessons/are-spotty-fruits-and-vegetables-safe-to-eat-elizabeth-brauer In 2010, 30 billion dollars worth of fruits and vegetables were wasted by American retailers and shoppers, in part because of cosmetic problems and perceived spoilage. But what are th
From playlist New TED-Ed Originals
Squares represented by a product of three ternary (...) - Harpaz - Workshop 2 - CEB T2 2019
Yonatan Harpaz (Université Paris Nord) / 27.06.2019 Squares represented by a product of three ternary quadratic forms, and a homogeneous variant of a method of Swinnerton-Dyer. Let k be a number field. In this talk we will consider K3 surfaces over k which admit a degree 2 map to the pr
From playlist 2019 - T2 - Reinventing rational points
Funny Hyderabadi Bralvi Molana.......
From playlist Humor