Computable Legendrian invariants

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dc.creatorNg, Lenhard L.
dc.date2000-11-30
dc.date2001-07-02
dc.date.accessioned2026-07-07T04:38:57Z
dc.date.available2026-07-07T04:38:57Z
dc.descriptionWe establish tools to facilitate the computation and application of the Chekanov-Eliashberg differential graded algebra (DGA), a Legendrian-isotopy invariant of Legendrian knots in standard contact three-space. More specifically, we reformulate the DGA in terms of front projection, and introduce the characteristic algebra, a new invariant derived from the DGA. We use our techniques to distinguish between several previously indistinguishable Legendrian knots and links.
dc.description24 pages, 13 figures; more examples, section on links added; minor revisions made
dc.identifierhttps://arxiv.org/abs/math/0011265
dc.identifierhttp://arxiv.org/abs/math/0011265
dc.identifierTopology 42 (2003), 55-82
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/60479
dc.subjectGeometric Topology
dc.subject57R17 (primary) 53D12, 57M27 (secondary)
dc.titleComputable Legendrian invariants
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