
Re: Surface geodesics
Posted:
Jan 20, 2014 3:15 AM


Thanks a lot for your reply. I haven't yet thought about it, but I would like to ask you, if this is not a silly question, what are the symbols \/ and R. Regards.
On 20/01/2014 08:41, William Elliot wrote: > On Sun, 19 Jan 2014, ?~B?XPOSITO wrote: > >> Can somebody provide an example of a connected surface containing a >> nonplane> geodesic, apart from those surfaces contained in the plane >> or the sphere? Does such a surface even exist? > > Yes. > ( (x,y,z}  x^2 + y^2 = 1, z in [1,1] } > . . \/ Rx[2,2]x{1} \/ [2,2]xRx{1} > . .  { (x,y)  x^2 + y^2 < 1 }x{1,1}. > > A ribbon 3 ft by 4 in. twisted lengthwise 2 rotations. > > >

