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Who Is Leonhard Euler and What Did He Do?
Thanks to Wikipedia, here’s a synopsis of Euler’s fascinating story:
Leonhard Euler (pronounced ‘OY-lər) is a Swiss mathematician, physicist, astronomer, logician and engineer. He is responsible for some of the most influential mathematical discoveries, including graph theory.
In 1735, Euler presented a solution to the problem known as the Seven Bridges of Königsberg. The city of Königsberg, Prussia was set on the Pregel River, and included two large islands that were connected to each other and the mainland by seven bridges. The problem is to decide whether it is possible to follow a path that crosses each bridge exactly once and returns to the starting point. It is not possible: there is no Eulerian circuit. This solution is considered to be the first theorem of graph theory, specifically of planar graph theory.
Euler also discovered the formula V-E+F=2 relating the number of vertices, edges and faces of a convex polyhedron, and hence of a planar graph. The constant in this formula is now known as the Euler characteristic for the graph (or other mathematical object), and is related to the genus of the object. The study and generalization of this formula, specifically by Cauchy and L’Huilier, is at the origin of topology.
Why Is Global Graph Celebration Day Important?
As a graph-enthusiast, you may have noticed that many people across the globe have not yet fallen into the graph-epiphany. Why?
My personal assumption would be it is because graph-thinking is a very different way to explore data, connections, patterns and networks, and many people just simply haven’t been properly introduced to the idea. Maybe you remember when you first discovered graph databases. Do you remember how it happened and how it changed your way of thinking? 😀
We are asking our community to join us during Global Graph Celebration Day in a thought-leading effort to help the world understand the value of graphs!
Here’s How to Get Involved
We invite our community members and fellow graph-enthusiasts to organize a local event or gathering with friends or colleagues to celebrate graphs and Euler’s birthday.
The gathering/event can be as large or as small as you’re comfortable with hosting (even a gathering of 4 friends/colleagues is impactful!). Your event can also be completely private/invite-only or an event that welcomes the general public.
If you get 12+ registrations for your event, we will send you and your attendees exclusive Global Graph Celebration Day t-shirts! Everyone who registers to attend an event will be included in our Global Graph Celebration Day map of our community’s activities and build upon our Neo4j community graph.
Your Graph Day Event
The largest requirements are that the activities scheduled fall on Monday, April 15, 2019 and center on graph-related topics. Below, we have listed a couple ideas of activities you can do on this day, but feel free to create your own or riff from our ideas.
Here are some event ideas:
- Lunch & Learn: Lead a lunch and learn in your office and teach your colleagues about graph-thinking and Neo4j.
- Graph Games: See who on your team gets the farthest with laptop games like Treksit, break into groups and play Pandemic Board Game, or go simple with pencil-and-paper games like, Sim, Achi or Sprouts!
- Whiteboard Brainstorm: Pick a topic(s) and organize a graph-modeling whiteboard brainstorming session. (Or, gamilfy it as a “speed-graph” contest where you announce any random topic and users have two minutes to model a graph.)
- Neo4j Sandbox Discovery Game: Have friends log on to Neo4j sandbox and see if they make any interesting discoveries.
- Google Mini-Map: Everyone exports their Google maps data and graphs it to see if they overlapped.
How Will Neo4j Help?
Upon signing up in the email form below, you’ll receive an email from the Neo4j Developer Relations Team. This email will provide you with you a basic rundown of planning your celebration, as well as a contact for resources you may need along the way.
Once you register your event with us, we will:
- Create a customized Global Graph Celebration Day flyer for your event.
- Add your event to our Neo4j Graph Celebration Day community graph.
- Add your event to the promotions calendar that lists all Global Graph Celebration Day events.
- Provide you with a custom registration-form link to collecting names, emails and t-shirt sizes of the people RSVPing to attending your event. (Don’t worry, we won’t be contacting anyone and will send you along your full RSVP list).
- Your registered attendees will have the option to add themselves to the Global Graph Celebration Day community graph! They’ll also have the option to answer additional questions to form deeper community graph connections.
We’ll also mail you a box of stickers and small swag ahead of time for you to distribute during your event. For events that exceed 12+ RSVPs we will also provide Global Graph Celebration Day t-shirts (for the organizer and all the RSVP’d guests based on the sizes they requested for themselves upon registration).
Please note: To receive shirts for attendees by event date, they must register by March 15, 2019. If attendees register for the event after the deadline, shirts for them will come in a separate package to the organizer and is subject to arrival a couple weeks after the event day.
Host a Global Graph Celebration Day Event – Sign Up Now
Enter your email below and we will contact with the details you’ll need to get your event registered, get your t-shirts, and get your event and RSVPs listed in the community graph.
About the Author
Karin Wolok , Neo4j Program Manager, Community Development & Enablement
Karin Wolok has worked for some of the most-renowned individuals and companies in the world, launched a successful professional women’s network in two major cities in the U.S., and developed a consumer concert experience program for the largest global entertainment company.
Transcending her career from entertainment to technology, she became the first hire for a venture-backed start-up company in Philadelphia, where she went from working “rap battles to robot battles.” She found her passion in working with software engineers and programmers.
Within less than a two-year with the company, she became a notable leader in community development within the tech space in Philadelphia.
She is motivated by bring success and positive energy to the lives of those around her and prides herself in her ability to network and connect with individuals.
And just like in Neo4j, relationships are key!