In algebraic geometry, a variety over a field k is ruled if it is birational to the product of the projective line with some variety over k. A variety is uniruled if it is covered by a family of rational curves. (More precisely, a variety X is uniruled if there is a variety Y and a dominant rational map Y × P1 – → X which does not factor through the projection to Y.) The concept arose from the ruled surfaces of 19th-century geometry, meaning surfaces in affine space or projective space which are covered by lines. Uniruled varieties can be considered to be relatively simple among all varieties, although there are many of them. (Wikipedia).
From playlist Music.
C34 Expanding this method to higher order linear differential equations
I this video I expand the method of the variation of parameters to higher-order (higher than two), linear ODE's.
From playlist Differential Equations
From playlist the absolute best of stereolab
SmoothLife with three scales, i.e. outer radii differing by factors of 3, similar to McCabe's multiscale Turing patterns. The rules on all three scales are the same, although they could also be different. Download from sourceforge available http://sourceforge.net/projects/smoothlife/ .
From playlist SmoothLife
(0.3.101) Exercise 0.3.101: Classifying Differential Equations
This video explains how to classify differential equations based upon their properties https://mathispower4u.com
From playlist Differential Equations: Complete Set of Course Videos
From the album Margerine Eclipse
From playlist the absolute best of stereolab
The Polynomial Method and Applications From Finite Field Kakeya to Distinct Distances - Larry Guth
Larry Guth University of Toronto; Member, School of Mathematics April 22, 2011 For more videos, visit http://video.ias.edu
From playlist Mathematics
Jacques Tits: Algebraic simple groups and buildings
This lecture was held by Abel Laureate Jacques Tits at The University of Oslo, May 21, 2008 and was part of the Abel Prize Lectures in connection with the Abel Prize Week celebrations. Program for the Abel Lectures 2008 1. Abel Laureate John Thompson: “Dirichlet series and SL(2,Z)" 2
From playlist Abel Lectures
Complex surfaces 4: Ruled surfaces
This talk gives an informal survey of ruled surfaces and their role in the Enriques classification. We give a few examples of ruled surfaces, summarize the basic invariants of surfaces, and sketch how one classifies the surfaces of Kodaira dimension minus infinity.
From playlist Algebraic geometry: extra topics
Burt Totaro: Decomposition of the diagonal, and applications
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 Algebraic and Complex Geometry
Rigidity and Flexibility of Schubert classes - Colleen Robles
Colleen Robles Texas A & M University; Member, School of Mathematics January 27, 2014 Consider a rational homogeneous variety X. The Schubert classes of X form a free additive basis of the integral homology of X. Given a Schubert class S in X, Borel and Haefliger asked: aside from the Schu
From playlist Mathematics
Mod-01 Lec-19 Phonological Phenomena
Introduction to Modern Linguistics by Prof.Shreesh Chaudhary & Prof. Rajesh Kumar,Department of Humanities and Social Sciences,IIT Madras.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Madras: Introduction to Modern Linguistics | CosmoLearning.org English Language
Algebraic geometry 38: The Zariski tangent space (replacement)
This lecture is part of an online algebraic geometry course, based on chapter I of "Algebraic geometry" by Hartshorne. It covers the Zariski tangent space, and describes some other ways of viewing tangent spaces. (This is a replacement for the original video, which had poor audio quality.
From playlist Algebraic geometry I: Varieties
Mod-01 Lec-23 Syllable – Based Generalization
Introduction to Modern Linguistics by Prof.Shreesh Chaudhary & Prof. Rajesh Kumar,Department of Humanities and Social Sciences,IIT Madras.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Madras: Introduction to Modern Linguistics | CosmoLearning.org English Language
Reverse Plane Partitions and Modules for the Preprojective Algebra - Anne Dranowski
Virtual Workshop on Recent Developments in Geometric Representation Theory Topic: Reverse Plane Partitions and Modules for the Preprojective Algebra Speaker: Anne Dranowski Affiliation: Member, School of Mathematics Date: November 19, 2020 For more video please visit http://video.ias.edu
From playlist Virtual Workshop on Recent Developments in Geometric Representation Theory