MATHEMATICS AND ORIGAMI

Mathematics and Origami

1

2

(^21)

• − =
  ED
  t ;
  1
  2
  (^12)
  −


• =
  t
  ED
  t
  ED
  2
  − 1 =
  t t
  2
  1
  2
  2 2 −
  −
  = ; (t^2 − 1 )t=t−(t^2 − 1 )
  (t^2 − 1 )()t+ 1 =t ; t^3 −t+t^2 − 1 =t
  t^3 +t^2 − 2 t− 1 = 0
  Interlude