Geodesic
On Bohrs inequality
Trudy Instituta matematiki i mehaniki, Trudy Instituta Matematiki i Mekhaniki UrO RAN, Tome 16 (2010) no. 4, pp. 312-313
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It is established that H. Bohr's inequality $\sum_{k=0}^\infty|f^{(k)}(0)/(2^{k/2}k!)|\le\sqrt2\|f\|_\infty$ is sharp on the class $H_\infty$.
Keywords: sharp inequality for functions that are analytic in a circle. 
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V. A. Yudin. On Bohrs inequality. Trudy Instituta matematiki i mehaniki, Trudy Instituta Matematiki i Mekhaniki UrO RAN, Tome 16 (2010) no. 4, pp. 312-313. http://geodesic.mathdoc.fr/item/TIMM_2010_16_4_a29/

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