Families of sets | Mathematical problems | Combinatorial design
Kirkman's schoolgirl problem is a problem in combinatorics proposed by Rev. Thomas Penyngton Kirkman in 1850 as Query VI in The Lady's and Gentleman's Diary (pg.48). The problem states: Fifteen young ladies in a school walk out three abreast for seven days in succession: it is required to arrange them daily so that no two shall walk twice abreast. (Wikipedia).
How researchers saved on covid tests by finding values of polynomials
Younglings are always asking when we'll use polynomials in real life. This video shows not only how polynomials give rise to beautiful patterns, but also how these patterns can be used to create other patterns that we might be after. Here's the proof that a non-zero degree-d polynomial ha
From playlist Summer of Math Exposition 2 videos
From playlist Storytelling List
Combinatorics | Math History | NJ Wildberger
We give a brief historical introduction to the vibrant modern theory of combinatorics, concentrating on examples coming from counting problems, graph theory and generating functions. In particular we look at partitions and Euler's pentagonal theorem, Fibonacci numbers, the Catalan sequence
From playlist MathHistory: A course in the History of Mathematics
More designs - P. Keevash - Workshop 1 - CEB T1 2018
Peter Keevash (Oxford) / 01.02.2018 We generalise the existence of combinatorial designs to the setting of subset sums in lattices with coordinates indexed by labelled faces of simplicial complexes. This general framework includes the problem of decomposing hypergraphs with extra edge dat
From playlist 2018 - T1 - Model Theory, Combinatorics and Valued fields
Hypergraph matchings and designs – Peter Keevash – ICM2018
Combinatorics Invited Lecture 13.10 Hypergraph matchings and designs Peter Keevash Abstract: We survey some aspects of the perfect matching problem in hypergraphs, with particular emphasis on structural characterisation of the existence problem in dense hypergraphs and the existence of d
From playlist Combinatorics
Why Boys Are Mean To Girls They Like
It can be very hard to keep admitting to yourself and the world that you like someone – when it seems they may not like you. If you like our films, take a look at our shop (we ship worldwide): https://goo.gl/1qB7VT FURTHER READING “An enormous amount of trouble in the world – especi
From playlist RELATIONSHIPS
High school dating can be tough -- even when you're smart, pretty and popular. Cristen also considers "acceptable terms for female humans." Share this on Facebook: http://on.fb.me/1paRhah Share this on Twitter: http://ctt.ec/pLh9A Subscribe: http://bit.ly/1l8JXv3 On the web: http://www.st
From playlist Stuff Mom Never Told You
MegaFavNumbers - 1701936 knots
My contribution to the #MegaFavNumbers project. A brief introduction to mathematical knot theory, and a 19th-century Theory of Everything that didn't quite work out. References: J Hoste, M Thistlethwaite, J Weeks, "The First 1701936 Knots", Mathematical Intelligencer 20.4 (1998) 33-48
From playlist MegaFavNumbers
Maybe you can relate? Struggling is a part of the learning process but in my experience many take the struggles of math to believe that they cannot learn math or are not a math person. In this video I hope to shed some light on my experience struggling with math so that you can better unde
From playlist Mr. McLogan
Stanford Lecture: Don Knuth—"A Conjecture That Had To Be True" (2017)
Donald Knuth's 23rd Annual Christmas Tree Lecture: A Conjecture That Had To Be True Speaker: Donald Knuth 2017 A few months ago, the speaker did some extensive calculations relating to a curious problem in combinatorial geometry; and the resulting numbers satisfied an amazing formula. Al
From playlist Donald Knuth Lectures
One-Way Goodness of Fit Chi-Square by Hand – No Preference (15-3)
We use the one-way chi-square test, goodness of fit with random expected values, a situation where the expected values are occurring randomly, with the Three Bear Chi Square A family of bears wants to know which of their chairs is most comfortable. They ask a classroom of 120 red-cloaked s
From playlist WK15 Chi-Square & Non-Parametric Alternatives - Online Statistics for the Flipped Classroom
How miscommunication happens (and how to avoid it) - Katherine Hampsten
View full lesson: http://ed.ted.com/lessons/how-to-avoid-miscommunication-katherine-hampsten Have you ever talked with a friend about a problem, only to realize that he just doesn’t seem to grasp why the issue is so important to you? Have you ever presented an idea to a group, and it’s me
From playlist New TED-Ed Originals
MythBusters - Adam & Jamie Introduce Season 7
New episodes return Wednesday, Oct. 7th @ 9pm E/P on Discovery! Check out exclusive footage straight from the MythBusters' own video cameras: http://dsc.discovery.com/videos/mythbusters-raw/?smid=YTDSC-YTD-PLP Check out the new season of Mythbusters with Adam and Jamie! Connect with
From playlist MythBusters Classics
Girl gets fricking obliterated by an apple
Original video from vine
From playlist Interesting Videos
M/S of a small girl in school uniform, Gay (Gaye?) Ashwood, walking across the airport tarmac to a Swissair plane; she is accompanied by an air hostess, a crowd of other passengers follow, and there seems to be a large crowd of people gathered on the observation terrace of the airport (pro
From playlist Tourist Destination In Decline
Women, According to Google - Professor Boyfriend 15
What are the most common questions people ask Google about "why women..." reveals a lot about our prevailing stereotypes of how women, girls,and moms behave. Cristen and Professor Boyfriend turn to Google in their search for what people really think about the female sex. Share this on Fac
From playlist Stuff Mom Never Told You
Mathematical Games Hosted by Ed Pegg Jr. [Episode 3: Algebraic Number Magic]
Join Ed Pegg Jr. as he explores a variety of games and puzzles using Wolfram Language. In this episode, he features games and puzzles focusing on algebraic number magic. Follow us on our official social media channels. Twitter: https://twitter.com/WolframResearch/ Facebook: https://www.f
From playlist Mathematical Games Hosted by Ed Pegg Jr.