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Two Marx-Strohhacker type results for multivalent functions and their nth root are given. Both results provide a lower bound over the unit disk of ℜ n√f(z)/zp for functions that are p-valent starlike of a given order and uniformly p-valent starlike of a given order, respectively. Connections with previous results are indicated.
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Dorina Răducanu (2024) studied this question.
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