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Legendrian Products

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arxiv 1301.3700 v1 pith:NRHCS3ZH submitted 2013-01-16 math.SG

classification math.SG
keywords legendrianconstructionsproductcalledclassclassesclassicalcomputes
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This paper introduces two constructions of Legendrian submanifolds, called the Legendrian product and spinning, and computes their classical invariants, the Thurston-Bennequin invariant and the Maslov class, in R^{2n+1}. These constructions take two Legendrians K,L and returns a product K x L, they generalize other previous constructions in contact topology, such as frontspinning and hypercube tori, and are equivalent in R^{2n+1}. Interestingly, this construction relies upon the explicit embeddings of K,L and not their Legendrian isotopy classes.

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  1. The h-principle fails for prelegendrians in corank 2 fat distributions

    math.SG 2025-11 conditional novelty 8.0 of 10

    In corank-2 fat distributions, infinitely many prelegendrian tori share one formal class but are pairwise non-isotopic, detected by Legendrian contact homology of their canonical lifts.

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