Happy Valentine's Day!

 

I saw the idea on Cut-the-Knot page  and decided to make my Valentine to all friends of my blog.
Here are the steps:
1. Take two paper strips.

2. Glue ends together with 180 degree twist - yes, make two Moebius bands BUT make sure they have - twisted differently : one is right, the other is left.

3. Now glue these two strips together:

4. Cut the strips in the middle and your mathematical Valentine is done!

 

As a reading for Valentine's Day something romantic and mathematical at the same I suggest

Paolo Giordano the Solitude of Prime Numbers

During the Nemo storm I finished a piece which will go to the exhibit this year. It has been confirmed that my dream has come true - I will be having joint exhibit in Mattatuck Museum with my friend Gail Rothschild - please visit her webpage! And if today's meeting will have a positive outcome, then there will be another exhibit - in New York...