Preview Images of Calender 1986

Cover of Calender 1986, Helicoid with Rotation of Normals

Preface to Calender 1986

January 1986, Closed Geodesic on a Torus

February 1986, Deformtion of Catenoid into Helicoid

March 1986, Helix with Frenet Frame

April 1986, Minimal Monkey Saddle Tower

May 1986, Hopf Torus in S^3 by U. Pinkall

June 1986, Minimal Surface in Associate Family of Helicoid

July 1986, Torus Knots

August 1986, Minimal Surface in Associate Family of Scherk Surface

September 1986, Boy Surface - Imbedding of Projective Plane with Triple Point by U. Pinkall

October 1986, Catenoid Twins

November 1986, Tangent Surface of a Helix

December 1986, Asymptote Lines on the Pseudosphere