Geometric graphs | Planar graphs | Circle packing
In geometric graph theory, a penny graph is a contact graph of unit circles. It is formed from a collection of unit circles that do not cross each other, by creating a vertex for each circle and an edge for every pair of tangent circles. The circles can be represented physically by pennies, arranged without overlapping on a flat surface, with a vertex for each penny and an edge for each two pennies that touch. Penny graphs have also been called unit coin graphs, because they are the coin graphs formed from unit circles. If each vertex is represented by a point at the center of its circle, then two vertices will be adjacent if and only if their distance is the minimum distance among all pairs of points. Therefore, penny graphs have also been called minimum-distance graphs, smallest-distance graphs, or closest-pairs graphs. Similarly, in a mutual nearest neighbor graph that links pairs of points in the plane that are each other's nearest neighbors, each connected component is a penny graph, although edges in different components may have different lengths. Every penny graph is a unit disk graph and a matchstick graph.Like planar graphs more generally, they obey the four color theorem, but this theorem is easier to prove for penny graphs.Testing whether a graph is a penny graph, or finding its maximum independent set, is NP-hard; however, both upper and lower bounds are known for the size of the maximum independent set, higher than the bounds that are possible for arbitrary planar graphs. (Wikipedia).
A Few Conceptual Examples with Statistical Graphs
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From playlist Statistics
this a brief high-level overview of graph databases using only an ipad. in this video we discuss what a graph database is and how it differs from relational databases. this also looks at high level use cases.
From playlist graph databases
What do I need to know to graph a quadratic in vertex form
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
What do I have to know to graph a quadratic in standard form
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
How to graph a quadratic in vertex form
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
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
Eureka Math Grade 3 Module 6 Lesson 4
EngageNY/Eureka Math Grade 3 Module 6 Lesson 4 For more videos, please visit http://bit.ly/eurekapusd PLEASE leave a message if a video has a technical difficulty (audio separating from the video). Occasionally, Explain Everything will do that, requiring me to re-render the video. Duane
From playlist Eureka Math Grade 3 Module 6
Learn how to graph the parent graph of a quadratic equation in standard form using a table
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
What are the transformations of vertex form of a quadratic compared to standard form
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
Watch Desmos CTO Eric Berger demonstrate a few different ways to use Tables of Data.
From playlist Desmos LIVE
Python Programming Tutorial - How to Make a Stock Screener
This video teaches you how to create a stock screener based on any indicator you have built in Python. Don't know how to build indicators in Python? No problem! I have tons of videos just for you: http://sentdex.com/sentiment-analysisbig-data-and-python-tutorials-algorithmic-trading/python
From playlist Python: Mathematics and Stock/Forex/Futures indicators
Sponsored by Blinkist. The first 100 people who go to https://www.blinkist.com/thehistoryguy are going to get unlimited access for one week to try it out. You'll also get 25% off if you want the full membership. Today, the most popular book format in the world is not a traditional hardco
From playlist Economic History
This is an old video. See StatsMrR.com for access to hundreds of 1-3 minute, well-produced videos for learning Statistics. In this older video: graphs showing solutions to a linear inequality. How to dot it and why it all makes sense. From site AlgebraMrR.com
From playlist Older Statistics Videos and Other Math Videos
GCSE 9-1 Mathematics Algebra Revision|Expanding Brackets | Solving Linear Equations|Collecting Terms
Dear all I am making maths videos and also a maths tutor for all levels. Offer online+ Face to Face. Check out my website for more information www.abdallahmathstutoring.co.uk Also i sell products on etsy.com/AWMathsStationary for calculators and books. Books are all 50 pence for all lev
From playlist KS3 Maths
011 - Equivalence Principle In this video Paul Andersen explains how inertial mass and gravitational mass are equivalent. He shows you too simple methods for calculated individual inertial mass and gravitational mass. Albert Einstein used this principle to build his general theory of re
From playlist AP Physics 1 Videos
Bob Hearn - How Martin Gardner Inspired an Area of Theoretical Computer Science - CoM Oct 2021
Reconfiguration: How Martin Gardner Inspired an Area of Theoretical Computer Science A popular area in theoretical computer science for the past ten or fifteen years is known as “combinatorial reconfiguration”, or just “reconfiguration”. What is not widely appreciated is the debt this fie
From playlist Celebration of Mind 2021
Python In Education: Advanced 2D Plots
This video describes a few advanced methods for making plots using Python and Matplotlib. Here, I cover: * points and lines on the same plot * logarithmic plots (log-linear) * error bars (both y and x error bars) * bar graphs (including stacked bar graphs) * colored background and grids
From playlist Python In Education
How to graph a quadratic equation in standard form
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
How to determine the domain and range of a quadratic using its vertex
👉 Learn the basics to understanding graphing quadratics. A quadratic equation is an equation whose highest exponent in the variable(s) is 2. To graph a quadratic equation, we make use of a table of values and the fact that the graph of a quadratic is a parabola which has an axis of symmetr
From playlist Graph a Quadratic in Standard Form | Essentials
Bertrand Maury - Transport optimal et mouvements de foules sous contrainte de congestion (Part 2)
Transport optimal et mouvements de foules sous contrainte de congestion (Part 2)
From playlist Inter’actions en mathématiques 2015