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28 real bitangents: Dedicated to Ian Porteus
Published online by Cambridge University Press: 14 November 2011
Abstract
Although all the coefficients in the equation of a plane algebraic curve may be real numbers, it by no means follows that the equations of all its bitangents are real. But Plücker perceived that this could happen for the 28 bitangents of a nonsingular plane quartic. Where can this be observed in a body of 28 explicit linear equations? This modest note affords an example.
- Type
- Research Article
- Information
- Proceedings of the Royal Society of Edinburgh Section A: Mathematics , Volume 124 , Issue 4 , 1994 , pp. 729 - 736
- Copyright
- Copyright © Royal Society of Edinburgh 1994
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