Chapter+4

= Chapter 4 =

Jenny's questions:
 * Does the mouse exist?
 * What is color red?

Maria's question:
 * Which of our transformations commute with one another

Discussion threads Existence - metaphysics - representations in art and math - Wonderland existence Commutativity - extensions of operations - extensions of numbers (negative, imaginary) - infrared and ultraviolet color extensions

On the subject of color red: http://www.physorg.com/ news187625890.html