Graph families | Strongly regular graphs | Algebraic graph theory

Conference graph

In the mathematical area of graph theory, a conference graph is a strongly regular graph with parameters v, k = (v − 1)/2, λ = (v − 5)/4, and μ = (v − 1)/4. It is the graph associated with a symmetric conference matrix, and consequently its order v must be 1 (modulo 4) and a sum of two squares. Conference graphs are known to exist for all small values of v allowed by the restrictions, e.g., v = 5, 9, 13, 17, 25, 29, and (the Paley graphs) for all prime powers congruent to 1 (modulo 4). However, there are many values of v that are allowed, for which the existence of a conference graph is unknown. The eigenvalues of a conference graph need not be integers, unlike those of other strongly regular graphs. If the graph is connected, the eigenvalues are k with multiplicity 1, and two other eigenvalues, each with multiplicity (v − 1)/2. (Wikipedia).

Video thumbnail

Intro to Tournament Graphs | Graph Theory

We introduce directed tournament graphs, which can be thought of as a graph representing the outcome of a round robin tournament - where vertices represent teams, and directed edges (arcs) go from winners to losers. We'll also discuss how many labelled tournaments there are on n vertices,

From playlist Graph Theory

Video thumbnail

intro to graph databases

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

Video thumbnail

Attendance Report Dashboard for All Versions of Excel

Sign up for our Excel webinar, times added weekly: https://www.excelcampus.com/blueprint-registration/ In this post, I will explain how to create a time attendance dashboard for older versions of Excel. We look at different functions including VLOOKUP, COUNTIF, ISEVEN, GETPIVOTDATA, and

From playlist Excel Charts & Dashboards

Video thumbnail

Queue Introduction

Related videos: Queue intro: https://youtu.be/KxzhEQ-zpDc Queue implementation: https://youtu.be/EoisnPvUkOA Queue code: https://youtu.be/HV-hpvuGaC4 Data Structures Source Code: https://github.com/williamfiset/algorithms My website: http://www.williamfiset.com

From playlist Queue data structure playlist

Video thumbnail

Creating a Time-Series Graph with Excel

This demonstration shows you how to create a time-series graph in Excel. This demonstration corresponds to the Introduction to Statistics, Think & Do textbook by Scott Stevens (http://www.StevensStats.com).

From playlist Excel Demonstrations

Video thumbnail

Graphing Equations By Plotting Points - Part 1

This video shows how to graph equations by plotting points. Part 1 of 2 http://www.mathispower4u.yolasite.com

From playlist Graphing Various Functions

Video thumbnail

Graph Data Structure 1. Terminology and Representation (algorithms)

This is the first in a series of videos about the graph data structure. It mentions the applications of graphs, defines various terminology associated with graphs, and describes how a graph can be represented programmatically by means of adjacency lists or an adjacency matrix.

From playlist Data Structures

Video thumbnail

Rotating graph

I created this video with the YouTube Video Editor (https://www.youtube.com/editor)

From playlist 3d graphs

Video thumbnail

Gong Show

URL: https://strings2015.icts.res.in/schedule.php

From playlist Strings 2015 conference

Video thumbnail

MA 15: Euler circuits and paths

This video is for my Spring 2020 section of MA 15, for the class meeting on Friday April 3. Fast forward music is from "Now Get Busy" by the Beastie Boys, licensed Creative Commons Noncommercial Sampling Plus.

From playlist Math 15 Spring 2020

Video thumbnail

Curious Use Cases of GraphQL (and The Future of GraphQL)

As GraphQL moves into the mainstream, the tooling & ecosystem has grown and has made it possible to do much more with GraphQL than using it as just a data layer. In this talk, I’ll show how developers are using GraphQL as an API gateway to accomplish things that you may have never thought

From playlist GraphQL

Video thumbnail

Full Stack Development in the Era of Serverless Computing

Building your own real-world, secure & scalable GraphQL API is a lot of work. With AppSync, robust GraphQL APIs including schema, resolvers, and data sources are created & configured automatically and instantly through either the AWS Amplify CLI or the AppSync console, abstracting away muc

From playlist Serverless

Video thumbnail

Computational Public Relations: What Is Possible When we Apply Computation Everywhere?

To learn more about Wolfram Technology Conference, please visit: https://www.wolfram.com/events/technology-conference/ Speaker: Swede White Wolfram developers and colleagues discussed the latest in innovative technologies for cloud computing, interactive deployment, mobile devices, and m

From playlist Wolfram Technology Conference 2017

Video thumbnail

25c3: Mining social contacts with active RFID

Speakers: Ciro Cattuto, Milosch Meriac, aestetix We describe the implementation of a distributed proximity detection firmware for the OpenBeacon RFID platform. We report on experiments performed during conference gatherings, where the new feature of proximity detection was used to mine an

From playlist 25C3: Nothing to hide

Video thumbnail

Graph Databases

Emil Eifrem talks about graph databases why and when to use them and how they are taking over the database world!

From playlist Programming Podcast

Video thumbnail

Lecture1. Introduction to Network Science.

Network Science 2021 @ HSE http://www.leonidzhukov.net/hse/2021/networks/

From playlist Network Science, 2021

Video thumbnail

Luis Garcia Puente - LatMath 2022 - IPAM's Latinx in the Mathematical Sciences Conference

Recorded 08 July 2022. Luis Garcia Puente presents at IPAM's Latinx in the Mathematical Sciences Conference. Learn more online at: http://www.ipam.ucla.edu/programs/special-events-and-conferences/latinx-in-the-mathematical-sciences-conference-2022/

From playlist LatMath 2022 - IPAM's Latinx in the Mathematical Sciences Conference

Video thumbnail

GRCon21 - Demonstration of GNU Radio High Data Rate BPSK 10 Mbps Modem Real-Time with ...

Demonstration of GNU Radio High Data Rate BPSK 10 Mbps Modem Real-Time with Only Multi-Core General Purpose Processors presented by David Miller at GNU Radio Conference 2021 This paper presents a GNU Radio Modem design that demonstrates the feasibility of achieving greater or equal to 10

From playlist GRCon 2021

Video thumbnail

Lecture 1 Graphs Definition

A formal definition of a Graph and its properties

From playlist Graph Theory

Related pages

Graph theory | Mathematics | Strongly regular graph | Sum of two squares theorem | Modular arithmetic | Paley graph | Conference matrix