In combinatorics, the twelvefold way is a systematic classification of 12 related enumerative problems concerning two finite sets, which include the classical problems of counting permutations, combinations, multisets, and partitions either of a set or of a number. The idea of the classification is credited to Gian-Carlo Rota, and the name was suggested by Joel Spencer. (Wikipedia).
MIT 3.60 | Lec 11b: Symmetry, Structure, Tensor Properties of Materials
Part 2: Point Groups View the complete course at: http://ocw.mit.edu/3-60F05 License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu
From playlist MIT 3.60 Symmetry, Structure & Tensor Properties of Material
Mod-02 Lec-03 Crystal Structure
Advanced ceramics for strategic applications by Prof. H.S. Maiti,Department of Metallurgy and Material Science,IIT Kharagpur.For more details on NPTEL visit http://nptel.ac.in
From playlist IIT Kharagpur: Advanced Ceramics for Strategic Applications | CosmoLearning.org Materials Science
Roger Penrose - Forbidden crystal symmetry in mathematics and architecture
Sir Roger Penrose provides a unique insight into the "forbidden symmetry" of his famous penrose tiles and the use of non-repeating patterns in design and architecture. It is a rigorous mathematical theorem that the only crystallographic symmetries are 2-fold, 3-fold, 4-fold, and 6-fold s
From playlist Mathematics
Powered by https://www.numerise.com/ Square numbers
From playlist Indices, powers & roots
This video explains how to multiply whole numbers and decimals by powers of ten. Search Video Library at http://www.mathispower4u.wordpress.com
From playlist Multiplying and Dividing with Decimals
14J Polar Form of Complex Numbers and the nth Root
Another method of expressing complex numbers.
From playlist Linear Algebra
How to easily multiply any number by twelve
The twelve times table trick fast and easy to apply - and it will leave you able to multiply any number by twelve rapidly! It is similar to an eleven times table trick we have looked at earlier - https://www.youtube.com/watch?v=_HrHUUWtsbE Just follow these simple rules - for the numb
From playlist tecmath math
This video explains how to multiply using whole numbers. http://mathispower4u.yolasite.com/
From playlist Multiplying and Dividing Whole Numbers
Determine Prime and Composite Numbers (Common Core 3/4 Math Ex 20)
This video provides example of how to determine if numbers are prime or composite.
From playlist Common Core Grade 3/4 Practice Standardized Test Math Problems
Solving Higher Degree Trigonometric Equations (2 of 3: Combining results into proof)
More resources available at www.misterwootube.com
From playlist Using Complex Numbers
Due to the COVID-19 pandemic, Carnegie Mellon University is protecting the health and safety of its community by holding all large classes online. People from outside Carnegie Mellon University are welcome to tune in to see how the class is taught, but unfortunately Prof. Loh will not be o
From playlist CMU 21-228 Discrete Mathematics
This is Lecture 15 of the CSE547 (Discrete Mathematics) taught by Professor Steven Skiena [http://www.cs.sunysb.edu/~skiena/] at Stony Brook University in 1999. The lecture slides are available at: http://www.cs.sunysb.edu/~algorith/math-video/slides/Lecture%2015.pdf More information may
From playlist CSE547 - Discrete Mathematics - 1999 SBU
Due to the COVID-19 pandemic, Carnegie Mellon University is protecting the health and safety of its community by holding all large classes online. People from outside Carnegie Mellon University are welcome to tune in to see how the class is taught, but unfortunately Prof. Loh will not be o
From playlist CMU 21-228 Discrete Mathematics
3D path counting brain teaser | Puzzles | Math for fun and glory | Khan Academy
Extending the path counting to three dimensions. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/math-for-fun-and-glory/amc-10/2013-amc-10-a/v/2013-amc-10-a-21-amc-12-a-17?utm_source=YT&utm_medium=Desc&utm_campaign=mathforfunandglory Missed the previous lesso
From playlist Puzzles | Math for fun and glory | Khan Academy
2021 MATHCOUNTS Chapter Invitational Live Solve - 3 by Po-Shen Loh
Welcome to the Official YouTube Channel of the Daily Challenge with Po-Shen Loh! Please subscribe to stay in touch. This time, Prof. Po-Shen Loh is going to collaborate with MATHCOUNTS, one of the biggest middle school math competitions in the US, AGAIN! Prof. Loh is going to solve all p
From playlist MATHCOUNTS
Path counting brain teaser | Puzzles | Math for fun and glory | Khan Academy
Counting paths in a square. Created by Sal Khan. Watch the next lesson: https://www.khanacademy.org/math/math-for-fun-and-glory/puzzles/brain-teasers/v/3-d-path-counting-brain-teaser?utm_source=YT&utm_medium=Desc&utm_campaign=mathforfunandglory Missed the previous lesson? https://www.kha
From playlist Puzzles | Math for fun and glory | Khan Academy
Example: Dividing Whole Numbers with a Remainder
This video provides an example of dividing a 4 digit whole number by a 2 digit whole number with a remainder. Complete video list: http://www.mathispower4u.yolasite.com
From playlist Multiplying and Dividing Whole Numbers
Pascal's triangle for binomial expansion | Algebra II | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/algebra2/polynomial_and_rational/binomial_theorem/e/binomial-theorem?utm_source=YT&utm_medium=Desc&utm_campaign=AlgebraII Watch the next lesson: https://www.khanacademy.org/math/algebra2/polynomi
From playlist Algebra II | High School Math | Khan Academy