Towards a More Computational Mathematics - Rational Trigonometry and New Foundations for Geometry
Insights into Mathematics via YouTube
Overview
Syllabus
Intro to Rational Trigonometry
Two key examples
Outline of talk
Quadrance between points
Pythagoras and Triple quad formula
Spread between lines
Spread as a normalized squared determinant
Paul Miller's spread protractor
Laws of affine rational trigonometry
Thales' theorem
The ZOME construction system
ZOME and spreads
Two coloured primitive ZOME triangles
Three coloured primitive ZOME triangles
Proofs of main laws: Cross law
Proofs of spread law, and quadrea
Proof of Triple spread formula
Equal spreads and the logistic map
Spread polynomials
Formulas for spread polynomials
Examples of spread polynomials
Factorization of spread polynomials
Quadruple quad formula
Quadruple spread formula
Cyclic quadrilaterals
Application to a right tetrahedron
Projective Pythagoras theorem
Projective rational trigonometry
A projective triangle
Projective rational trigonometry
Projective quadrea
Solid geometry and tetrahedra
The regular tetrahedron
Taught by
Insights into Mathematics