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Interpolation of toric varieties
Univ Buenos Aires, FCEN, Dept Matemat, Ciudad Univ,Pab 1, RA-1428 Buenos Aires, DF, Argentina..
KTH, School of Engineering Sciences (SCI), Mathematics (Dept.), Mathematics (Div.).ORCID iD: 0000-0002-7186-1524
Univ Oslo, Dept Math, POB 1053 Blindern, NO-0316 Oslo, Norway..
2024 (English)In: New York Journal of Mathematics, E-ISSN 1076-9803, Vol. 30, p. 1498-1516Article in journal (Refereed) Published
Abstract [en]

Let X C P-d be an m-dimensional variety in d-dimensional complex projective space. Let k be a positive integer such that the combinatorial number ( m + k k ) is smaller than or equal to d . Consider the following interpolak tion problem: does there exist a variety Y C P-d of dimension strictly smaller than ( m + k k) , with X C Y , such that the tangent space to Y at a point p is an element of X is k equal to the k th osculating space to X at p , for almost all points p is an element of X ? In this paper we consider this question in the toric setting. We prove that if X is toric, then there is a unique toric variety Y solving the above interpolation problem. We identify Y in the general case and we explicitly compute some of its invariants when X is a toric curve.

Place, publisher, year, edition, pages
ELECTRONIC JOURNALS PROJECT , 2024. Vol. 30, p. 1498-1516
Keywords [en]
Toric variety, interpolation, osculating spaces, lattice polytopes
National Category
Mathematics
Identifiers
URN: urn:nbn:se:kth:diva-355341ISI: 001331176500001Scopus ID: 2-s2.0-85216852752OAI: oai:DiVA.org:kth-355341DiVA, id: diva2:1908886
Note

QC 20250213

Available from: 2024-10-29 Created: 2024-10-29 Last updated: 2025-02-13Bibliographically approved

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Di Rocco, Sandra

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CiteExportLink to record
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