Combinatorics | Permutations

Twelvefold way

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).

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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

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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

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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

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Square numbers

Powered by https://www.numerise.com/ Square numbers

From playlist Indices, powers & roots

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Multiplying by Powers of Ten

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

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14J Polar Form of Complex Numbers and the nth Root

Another method of expressing complex numbers.

From playlist Linear Algebra

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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

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Multiplying Whole Numbers

This video explains how to multiply using whole numbers. http://mathispower4u.yolasite.com/

From playlist Multiplying and Dividing Whole Numbers

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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

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CMU Discrete Mathematics 2/5

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

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Lecture 15 - Convolutions

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

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CMU Discrete Mathematics 2/22

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

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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

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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

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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

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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

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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

Related pages

Finite set | Summation | Lah number | Statistics | Coupon collector's problem | Iverson bracket | Cyclic permutation | Up to | Empty product | Group (mathematics) | Permutation | Combinatorics | Factorial | Injective function | Multiset | Element (mathematics) | Sample space | Equivalence class | Bell number | Counting | Binomial coefficient | Dihedral group | Function (mathematics) | Partition of a set | Partial permutation | Surjective function | Multinomial distribution | Pigeonhole principle | Bijection | Random variable | Equivalence relation | Stars and bars (combinatorics) | Sampling (statistics) | Partition (number theory) | Cardinality | Categorical distribution | Generating function | Combination | Image (mathematics)