# Celebrating Euler’s birthday

by | Monday, April 15, 2013

Google has a new doodle out today (the 15th of April) to celebrate the 306th birth anniversary of Leonhard Euler, the Swiss mathematician and physicist. This prompted some reflection on his work (and some mathematical poetry)…

At the bottom right of the doodle above you can see an equation, famously called Euler’s identity. It is usually represented as follows:

It is famous because it combines into one simple equation the following elements:

• The number 0, the additive identity
• The number 1, the multiplicative identity
• The number pi, the ration of a circle’s circumference to its diameter
• The number e, the base of the natural logarithms
• The number i, the imaginary number that equals the square root of -1

Moreover, these constants are joined together by three basic arithmetic operations (addition, multiplication and exponentiation), each of which appears just once!

Can you pack more into one equation! It is no wonder that this equation has often been called the “gold standard for mathematical beauty!”

Anyway, Euler’s identity has appeared on this blog a couple of years ago – most specifically in a mathematical poem (titled The Imaginary i). Euler himself has appeared in these poems a couple of times as well. If you haven’t read these poems before, here they are again, in celebration of Euler’s birthday. Enjoy…

Topics related to this post: Art | Creativity | Fun | Mathematics | Personal | Puzzles | Worth Reading

A few randomly selected blog posts…

## The futures of higher ed with Phoebe Wagner

The Center for Science and the Imagination at ASU runs a series of short stories and virtual gatherings that explore issues related to transformative change. Essentially they solicit and publish a (super-short) short story that explores “themes of community,...

## Guide on the side, the GPS story

People have often argued that digital technologies change the role of teachers from (as it is commonly described) a "sage on the stage" to a "guide on the side." Personally, I have my doubts about this, complicated somewhat by my recent experiences with GPS...

## Psychoanalyzing Bush

I picked up Jacob Weisberg's The Bush Tragedy from the library and finished reading it over the past day and a half. I have never been a fan of Bush, mainly because I was troubled, from the very beginning, by his lack of curiosity, and his unwillingness to learn....

## Uncertainty, Creativity & Mindfulness: New chapter

Danah Henriksen, Carmen Richardson, Natalie Gruber and just published a chapter (titled: Uncertainity, Creativity & Mindfulness: Opening Possibilities and Reducing Restrictions Through Mindfulness) in the edited volume: Uncertainty: A Catalyst for Creativity....

## TE150 wins MSU-AT&T Award

Matt Koehler and I just arrived in New York, 3 hours late, checked into our hotel, paid 14.95 for internet - and guess what it was all worth it. One of the first emails I had received informed us that we had won the 2008 MSU-AT&T Instructional Technology Awards...

I love finding interesting faces. I am not speaking of the ones on people (though I like interesting ones there as well) but rather the unexpected faces we find in things around us. I have been doing this for a while now and have a flickr set devoted to this. Here are...

## Profesor 2.0, blurring the boundaries

I am in Chicago to give the Keynote address at the 2009 DePaul University Faculty Teaching and Learning Conference. The conference theme this year is Engaging Minds: Pedagogy and Personalism. I was invited by Sharon Guan (she was part of the AACTE Innovation &...

## Can we please slow it all down? School leaders take on ChatGPT (new article)

We have, over the past months, explored a range of issues related to generative AI, education, and creativity in our column series, for TechTrends, with the goal of fostering dialogue among stakeholders—students, parents, educators, and policymakers—to ensure these...

## Creativity and the urban STEM teacher

I have written previously about the MSUrbanSTEM project and what it has meant to me. Over the past couple of years we have also published about this line of work (most prominently in a special issue of The Journal of Computers in Mathematics and Science Teaching)....