
Let \(M_q\) be the Banach space of multipliers in the Hardy space \(H_q\), \(00}\left\|\{\varphi (\varepsilon k)\}_{k=0}^\infty \right\|_{M_q}\). It is known that any function \(\varphi\) which vanishes on \([1,\infty)\) and has a bounded variation on \([0,1]\) belongs to \(M_q[0,\infty)\). The author shows that the boundedness of the variation cannot be replaced by any growth rate of the variation on \([x,1]\) as \(x\to +0\).
Linear operators on function spaces (general), multiplier, Hardy space, Multipliers in one variable harmonic analysis, Multipliers for harmonic analysis in several variables
Linear operators on function spaces (general), multiplier, Hardy space, Multipliers in one variable harmonic analysis, Multipliers for harmonic analysis in several variables
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