Estimates of Toeplitz determinants for certain subclasses of bi-univalent function related to modified sigmoid function
| dc.contributor.author | Padmanabhan, Vijayalakshmi | en_US |
| dc.contributor.author | Rithika J., Sree | en_US |
| dc.date.accessioned | 2025-07-02T12:13:13Z | |
| dc.date.available | 2025-07-02T12:13:13Z | |
| dc.date.issued | 2025-07-01 | |
| dc.identifier.citation | Padmanabhan, V. & Rithika J., S. (2025). Estimates of Toeplitz determinants for certain subclasses of bi-univalent function related to modified sigmoid function. TWMS Journal of Applied and Engineering Mathematics, 15(7), 1864-1875. | en_US |
| dc.identifier.issn | 2146-1147 | |
| dc.identifier.issn | 2587-1013 | |
| dc.identifier.uri | https://jaem.isikun.edu.tr/web/index.php/current/133-vol15no7/1454 | |
| dc.identifier.uri | http://belgelik.isikun.edu.tr/xmlui/handleiubelgelik/6935 | |
| dc.description.abstract | The current comprehensive study aimed to determine upper bounds of Toeplitz determinants for some subclasses of bi-univalent functions. A function f ∈ A is said to be bi-univalent in ∆ if both f and f−1 are univalent in ∆. Modified sigmoid function play an important role in Geometric function theory and in this paper we derive the Sharp coefficient estimates, Fekete-Szegö inequality, second and third order Toeplitz determinants, for the subclasses S*σ(S), Cσ(S) of bi-univalent Sakaguchi type functions associated with the modified sigmoid function. | en_US |
| dc.language.iso | eng | en_US |
| dc.publisher | Işık University Press | en_US |
| dc.relation.ispartof | TWMS Journal of Applied and Engineering Mathematics | en_US |
| dc.rights | info:eu-repo/semantics/openAccess | en_US |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 United States | * |
| dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/3.0/us/ | * |
| dc.subject | Sakaguchi functions | en_US |
| dc.subject | Toeplitz determinants | en_US |
| dc.subject | Modified sigmoid function | en_US |
| dc.subject | Starlike functions | en_US |
| dc.subject | Convex function | en_US |
| dc.title | Estimates of Toeplitz determinants for certain subclasses of bi-univalent function related to modified sigmoid function | en_US |
| dc.type | article | en_US |
| dc.description.version | Publisher's Version | en_US |
| dc.identifier.volume | 15 | |
| dc.identifier.issue | 7 | |
| dc.identifier.startpage | 1864 | |
| dc.identifier.endpage | 1875 | |
| dc.peerreviewed | Yes | en_US |
| dc.publicationstatus | Published | en_US |
| dc.relation.publicationcategory | Makale - Uluslararası Hakemli Dergi - Başka Kurum Yazarı | en_US |
| dc.indekslendigikaynak | Web of Science | en_US |
| dc.indekslendigikaynak | Scopus | en_US |
| dc.indekslendigikaynak | Emerging Sources Citation Index (ESCI) | en_US |
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