Directional Invariants of Doubly Periodic Tangles

Autor: Ioannis Diamantis, Sofia Lambropoulou, Sonia Mahmoudi
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Symmetry, Vol 16, Iss 8, p 968 (2024)
Druh dokumentu: article
ISSN: 2073-8994
DOI: 10.3390/sym16080968
Popis: In this paper, we define novel topological invariants of doubly periodic tangles (DP tangles). DP tangles are embeddings of curves in the thickened plane with translational symmetries in two independent directions. We first organize the components of a DP tangle into different interlinked compounds, which are invariants of a DP tangle. The notion of an interlinked compound leads to the classification of DP tangles according to their directional type. We then prove that the directional type is an invariant of DP tangles using the concept of axis-motif, which can be viewed as the blueprint of a DP tangle.
Databáze: Directory of Open Access Journals
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