| Summary: | In this paper, we study <i>p</i>-tuples of bounded linear operators on a complex Hilbert space with adjoint operators defined with respect to a non-zero positive operator <i>A</i>. Our main objective is to investigate the joint <i>A</i>-numerical radius of the <i>p</i>-tuple.We established several upper bounds for it, some of which extend and improve upon a previous work of the second author. Additionally, we provide several sharp inequalities involving the classical <i>A</i>-numerical radius and the <i>A</i>-seminorm of semi-Hilbert space operators as applications of our results.
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