The superstitious numbers 13 and 18 both have a long history reaching back millennia. The first is usually regarded as unlucky, the latter, lucky – but why? What are the actual origins of these ...

ASUNCION -- The United Nations Educational, Scientific and Cultural Organization (UNESCO) on Wednesday inscribed Spring Festival, social practices of the Chinese people in celebration of the ...

Routines to create rounded corners, with either circular rounding, or continuous curvature rounding with no sudden curvature transitions. Provides rounding of corners or rounding that preserves corner ...

Some standard modules for making 3d shapes with attachment support, and function forms that produce a VNF. Also included are shortcuts cylinders in each orientation and extended versions of the ...

The goal of the book is to provide insight into many enjoyable and fascinating aspects of geometry, and to reveal interesting geometrical properties. The emphasis is on the practical applications of ...