Computable Legendrian invariants (Q1869155)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Computable Legendrian invariants |
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Computable Legendrian invariants (English)
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9 April 2003
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In the paper under review the author establishes tools to faciliate the computation and application of the Chekanov-Eliashberg differential graded algebra (DGA), a Legendrian-isotopy invariant of Legendrian knots and links in standard contact three space. More specifically, he reformulates the DGA in terms of front projections and introduces the characteristic algebra, a new invariant derived from the DGA. He uses his own techniques to distinguish between several previously indistinguishable Legendrian knots and links.
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Legendrian knot invariant
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Front projection
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Differential graded algebra
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