Permutation patterns

Vexillary permutation

In mathematics, a vexillary permutation is a permutation μ of the positive integers containing no subpermutation isomorphic to the permutation (2143); in other words, there do not exist four numbers i < j < k < l with μ(j) < μ(i) < μ(l) < μ(k). They were introduced by Lascoux and Schützenberger . The word "vexillary" means flag-like, and comes from the fact that vexillary permutations are related to flags of modules. showed that vexillary involutions are enumerated by Motzkin numbers. (Wikipedia).

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Vernier caliper / diameter and length of daily used objects.

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From playlist Fine Measurements

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What is a reduction dilation

👉 Learn about dilations. Dilation is the transformation of a shape by a scale factor to produce an image that is similar to the original shape but is different in size from the original shape. A dilation that creates a larger image is called an enlargement or a stretch while a dilation tha

From playlist Transformations

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What are dilations

👉 Learn about dilations. Dilation is the transformation of a shape by a scale factor to produce an image that is similar to the original shape but is different in size from the original shape. A dilation that creates a larger image is called an enlargement or a stretch while a dilation tha

From playlist Transformations

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Permutation Examples

This video provides four examples of permutations.

From playlist Probability

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What is an enlargement dilation

👉 Learn about dilations. Dilation is the transformation of a shape by a scale factor to produce an image that is similar to the original shape but is different in size from the original shape. A dilation that creates a larger image is called an enlargement or a stretch while a dilation tha

From playlist Transformations

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What is an angle bisector

👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles, supplementary angles, linear pairs, etc. Vertical a

From playlist Angle Relationships

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What is a linear pair

👉 Learn how to define angle relationships. Knowledge of the relationships between angles can help in determining the value of a given angle. The various angle relationships include: vertical angles, adjacent angles, complementary angles, supplementary angles, linear pairs, etc. Vertical a

From playlist Angle Relationships

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Determining the scale factor of two quadrilaterals

👉 Learn about dilations. Dilation is the transformation of a shape by a scale factor to produce an image that is similar to the original shape but is different in size from the original shape. A dilation that creates a larger image is called an enlargement or a stretch while a dilation tha

From playlist Transformations

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Ex: Evaluate a Combination and a Permutation - (n,r)

This video explains how to evaluate a combination and a permutation with the same value of n and r. Site: http://mathispower4u.com

From playlist Permutations and Combinations

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Mathilde Bouvel: Combinatorial specifications of permutation classes via their decomposition trees

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 Combinatorics

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Permutation Groups and Symmetric Groups | Abstract Algebra

We introduce permutation groups and symmetric groups. We cover some permutation notation, composition of permutations, composition of functions in general, and prove that the permutations of a set make a group (with certain details omitted). #abstractalgebra #grouptheory We will see the

From playlist Abstract Algebra

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From playlist PERMUTATION

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L23.3 Permutation operators on N particles and transpositions

MIT 8.06 Quantum Physics III, Spring 2018 Instructor: Barton Zwiebach View the complete course: https://ocw.mit.edu/8-06S18 YouTube Playlist: https://www.youtube.com/playlist?list=PLUl4u3cNGP60Zcz8LnCDFI8RPqRhJbb4L L23.3 Permutation operators on N particles and transpositions License: Cr

From playlist MIT 8.06 Quantum Physics III, Spring 2018

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Limits of permutation sequences - Yoshi Kohayakawa

Conference on Graphs and Analysis Yoshi Kohayakawa June 5, 2012 More videos on http://video.ias.edu

From playlist Mathematics

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Mathilde Bouvel : Studying permutation classes using the substitution decomposition

Recording during the thematic meeting : "Pre-School on Combinatorics and Interactions" the January 09, 2017 at the Centre International de Rencontres Mathématiques (Marseille, France) Filmmaker: Guillaume Hennenfent

From playlist Combinatorics

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Visual Group Theory, Lecture 2.3: Symmetric and alternating groups

Visual Group Theory, Lecture 2.3: Symmetric and alternating groups In this lecture, we introduce the last two of our "5 families" of groups: (4) symmetric groups and (5) alternating groups. The symmetric group S_n is the group of all n! permutations of {1,...,n}. We see several different

From playlist Visual Group Theory

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PERMUTATION | PERMUTATION SERIES | CREATA CLASSES

This is the 3rd video under the PERMUTATION series. This video covers the concept of Permutation in full detail using Animation & Visual Tools. Visit our website: https://creataclasses.com/ For a full-length course on PERMUTATION, COMBINATION & PROBABILITY: https://creataclasses.com/cou

From playlist PERMUTATION

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Alejandro Morales: "Asymptotics of principal evaluations of Schubert polynomials"

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From playlist Asymptotic Algebraic Combinatorics 2020

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Learning from ranks, learning to rank - Jean-Philippe Vert, Google Brain

Permutations and sorting operators are ubiquitous in data science, e.g., when one wants to analyze or predict preferences. As discrete combinatorial objects, permutations do not lend themselves easily to differential calculus, which underpins much of modern machine learning. In this talk I

From playlist Statistics and computation

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7.2.3 Permutation Matrices Part 3

7.2.3 Permutation Matrices Part 3

From playlist Week 7

Related pages

Permutation | Motzkin number | Flag (linear algebra) | Permutation pattern | Involution (mathematics) | Module (mathematics) | Riffle shuffle permutation