An extremal problem for functions of positive real part with application to a radius of convexity problem
An extremal problem for functions of positive real part with application to a radius of convexity problem
The functional <inline-formula content-type="math/mathml"> <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" alttext="upper R e left-brace z p prime left-parenthesis z right-parenthesis slash left-parenthesis p left-parenthesis z right-parenthesis plus beta plus i t right-parenthesis right-brace comma beta greater-than negative 1 comma StartAbsoluteValue z EndAbsoluteValue less-than-or-slanted-equals r comma 0 greater-than r greater-than 1"> <mml:semantics> <mml:mrow> <mml:mi>Re</mml:mi> <mml:mo></mml:mo> …