icosahedron and Euler’s formula

正二十面体とオイラーの多面体公式

6 September 1983, German Democratic Republic
Death Bicentenary of Leonhard Euler
design: A. Bengs

The out-line geometry is Icosahedron and the formula is thought by Euler on the right.  The formula is “v (vertices) – e (edges) + f (faces) = 2” in English.  Some people think this is very beautiful formula – well, for me as non-mathematician, polyhedra as three-dimensional objects are more attractive.

左に描かれている立体は正二十面体で、真ん中に「オイラーの多面体公式」があり、右がそのオイラー本人です。この公式は、( 頂点の数 )- (辺の数 )+ (面の数) = 2 というもので「世界で二番目に美しい数式」という本が上梓されていますが、、、数学者ではないわたしにとっては、立体の多面体のほうがよほど魅力的に映ります。

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s

This site uses Akismet to reduce spam. Learn how your comment data is processed.