Results 1 to 2 of 2

Math Help - How do you know if a surface is non-orientable?

  1. #1
    Junior Member
    Joined
    Oct 2009
    Posts
    48

    How do you know if a surface is non-orientable?

    Given a labelling scheme of the form abcd or whatever, I can find the star graph but how do I know if the surface is orientable/non-orientable?

    If X is homeomorphic to S^2, T_m (orientable) or P_m (non-orientable), how do I know if it's homeomorphic to S^2?

    Thanks.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member Rebesques's Avatar
    Joined
    Jul 2005
    From
    My house.
    Posts
    623
    Thanks
    34

    Re: How do you know if a surface is non-orientable?

    I don't think you can have information about the choice of orientation for anything less than a diffeomorphism.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Surface Area of Surface
    Posted in the Calculus Forum
    Replies: 1
    Last Post: November 1st 2010, 09:53 AM
  2. Tangent bundle is always orientable
    Posted in the Differential Geometry Forum
    Replies: 1
    Last Post: February 8th 2010, 05:46 PM
  3. Calculate the surface area of the surface
    Posted in the Calculus Forum
    Replies: 2
    Last Post: June 26th 2009, 04:03 AM
  4. Help finding surface area of a surface
    Posted in the Calculus Forum
    Replies: 1
    Last Post: October 3rd 2008, 04:11 PM
  5. Volume, Surface Area, and Lateral Surface Area
    Posted in the Geometry Forum
    Replies: 1
    Last Post: April 14th 2008, 11:40 PM

Search Tags


/mathhelpforum @mathhelpforum