@prefix dcat: <http://www.w3.org/ns/dcat#> .
@prefix dct: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix vcard: <http://www.w3.org/2006/vcard/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00702324v1> a dcat:Dataset ;
    dct:description """
              We consider differential operators between sections of arbitrary powers of the determinant line bundle over a contact manifold. We extend the standard notions of the Heisenberg calculus: noncommutative symbolic calculus, the principal symbol, and the contact order to such differential operators. Our first main result is an intrinsically defined ''subsymbol'' of a differential operator, which is a differential invariant of degree one lower than that of the principal symbol. In particular, this subsymbol associates a contact vector field to an arbitrary second order linear differential operator. Our second main result is the construction of a filtration that strengthens the well-known contact order filtration of the Heisenberg calculus.
            """ ;
    dct:identifier "hal-00702324" ;
    dct:issued "2026-05-16T16:02:00.512304"^^xsd:dateTime ;
    dct:language "en" ;
    dct:modified "2026-05-16T16:02:00.512309"^^xsd:dateTime ;
    dct:publisher <https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> ;
    dct:title "Linear differential operators on contact manifolds" ;
    dcat:contactPoint [ a vcard:Organization ;
            vcard:fn "CCSD" ] ;
    dcat:distribution <https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00702324v1/resource/d0b9bb25-3ddc-4226-80b6-b586877e5e38> ;
    dcat:keyword "contact-geometry",
        "differential-invariants",
        "differential-operators",
        "heisenberg-calculus",
        "infoeu-reposemanticspreprint",
        "innitesimal-characters",
        "mathmath-dgmathematics-mathdifferential-geometry-mathdg",
        "mathmath-mpmathematics-mathmathematical-physics-math-ph",
        "mathmath-rtmathematics-mathrepresentation-theory-mathrt",
        "preprints-working-papers-" ;
    dcat:landingPage <https://hal.science/hal-00702324> .

<https://rec.harvest-normandie.data4citizen.com/dataset/oai-hal-hal-00702324v1/resource/d0b9bb25-3ddc-4226-80b6-b586877e5e38> a dcat:Distribution ;
    dct:format "HTML" ;
    dct:issued "2026-05-16T16:02:00.569029"^^xsd:dateTime ;
    dct:modified "2026-05-16T16:02:00.480475"^^xsd:dateTime ;
    dct:title "Linear differential operators on contact manifolds" ;
    dcat:accessURL <https://hal.science/hal-00702324> .

<https://rec.harvest-normandie.data4citizen.com/organization/cce9db95-46d9-4dc2-84b6-764215d0a002> a foaf:Agent ;
    foaf:name "test_moissonnage_selune" .

<https://hal.science/hal-00702324> a foaf:Document .