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Homework Help: Laying the double-torus flat

  1. Dec 16, 2007 #1
    1. The problem statement, all variables and given/known data

    Why do you need both the orange and the purple cuts to lay the double-torus flat? Why can you not connect the orange cut going right and the purple cut going left under the torus. It seems like that would be enough to lay the double-torus flat...

    2. Relevant equations

    3. The attempt at a solution
  2. jcsd
  3. Dec 17, 2007 #2
    Do people understand my question?
  4. Apr 18, 2010 #3
    You are right! It is done explicitly in Introduction to algebraic curves By Phillip A. Griffiths, page 10, Figure 1.6. The book is also available on google books.
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