File:Homotopy group of circle.png

Summary
First go at homptopy groups. Author R Morris (User:Salix alba) Created using singsurf

Licensing
Source code  C+r1 (cos(pi y) AA+ sin(pi y) BB); AA=A/sqrt(A.A); BB=B/sqrt(B.B); B=A^T; A=N^T; N=diff(T,t); T=diff(C,t); C=[r cos(n pi t)+x0+a cos(pi t), r sin(n pi t)+y0 + b cos(pi t), sin(pi t)]; t=x;         