## Archive for the ‘geometry’ Category

### Origami and math

Posted by: **JBL** on May 20, 2011

### Symplectic geometry II

Posted by: **lewallen** on September 3, 2009

### Symplectic geometry I

Posted by: **lewallen** on September 2, 2009

### On the geometry of street signs

Posted by: **Alexander Ellis** on July 13, 2009