Jeribi, Aref; Mahfoudhi, Kamel Quaternionic Davis-Wielandt shell in a right quaternionic Hilbert space. (English) Zbl 07786455 Ukr. Math. J. 75, No. 6, 897-907 (2023) and Ukr. Mat. Zh. 75, No. 6, 784-792 (2023). MSC: 47Axx 15Axx 47Bxx PDFBibTeX XMLCite \textit{A. Jeribi} and \textit{K. Mahfoudhi}, Ukr. Math. J. 75, No. 6, 897--907 (2023; Zbl 07786455) Full Text: DOI
Beiranvand, A.; Ghazanfari, A. G. Improved Young and Heinz operator inequalities with Kantorovich constant. (English) Zbl 1494.47013 Ukr. Math. J. 73, No. 1, 22-33 (2021) and Ukr. Mat. Zh. 73, No. 1, 23-32 (2021). Reviewer: Mohammad Sal Moslehian (Mashhad) MSC: 47A30 47A63 15B48 26D20 PDFBibTeX XMLCite \textit{A. Beiranvand} and \textit{A. G. Ghazanfari}, Ukr. Math. J. 73, No. 1, 22--33 (2021; Zbl 1494.47013) Full Text: DOI
Heydarbeygi, Z.; Amyari, M.; Khanehgir, M. Some refinements of numerical radius inequalities. (English) Zbl 07355585 Ukr. Math. J. 72, No. 10, 1664-1674 (2021) and Ukr. Mat. Zh. 72, No. 10, 1443-1451 (2020). MSC: 47Axx 47Bxx PDFBibTeX XMLCite \textit{Z. Heydarbeygi} et al., Ukr. Math. J. 72, No. 10, 1664--1674 (2021; Zbl 07355585) Full Text: DOI arXiv