Hermitian–Toeplitz and Hankel determinants for certain starlike functions
The sharp lower and upper estimates on the second-and third-order Hermitian–Toeplitz
determinants for the classes of starlike functions associated with the modified sigmoid
function and a related function, whose Taylor coefficients are the Bell numbers, are
investigated. Further, the third and fourth Hankel determinants for these classes are also
estimated.
determinants for the classes of starlike functions associated with the modified sigmoid
function and a related function, whose Taylor coefficients are the Bell numbers, are
investigated. Further, the third and fourth Hankel determinants for these classes are also
estimated.
The sharp lower and upper estimates on the second- and third-order Hermitian–Toeplitz determinants for the classes of starlike functions associated with the modified sigmoid function and a related function, whose Taylor coefficients are the Bell numbers, are investigated. Further, the third and fourth Hankel determinants for these classes are also estimated.
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