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Open Access Research Article

q-numerical radius inequalities for two by two operator matrices

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pp. 1–16Online FirstApril 2026DOI: 10.47974/JIM-2066XML
Received:
01 Mar 2024
Published Online:
01 Apr 2026
Article type:
Research Article
Language:
EN
Article no.:
JIM-2066
Pages:
1–16

Abstract

This work explores new upper bounds for the q-numerical radius of Y ∈ L(K), extending and strengthening existing advancements in the field. Specific instances of q-numerical radius inequalities for operator sums are derived using these findings. Additionally, the paper presents new inequalities for the q-numerical radius of two by two matrices, offering valuable contributions to the study of operator theory.

Keywords

Subject Classifications

47A12 secondary46C0547A0547B65

References

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