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In this paper, we present the Leibniz rule for the $\Psi-$Hilfer ($\Psi-$H)fractional derivative in two versions, the first in relation to $\Psi-$RLfractional derivative and the second in relation to the $\Psi-$H fractionalderivative. In this sense, we present some particular cases of Leibniz rulesand Leibniz type rules from the investigated case.

Leibniz type rule: $\Psi-$Hilfer fractional derivative