A note on the curvature of the level line under the conformal mapping
Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika, no. 3 (2013), pp. 34-36 Cet article a éte moissonné depuis la source Math-Net.Ru

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A lower bound is established by a new method on the class $S$ for the curvature of level lines under conformal mapping.
Keywords: holomorphic univalent mapping, level line, curvature.
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S. A. Copanev. A note on the curvature of the level line under the conformal mapping. Vestnik Tomskogo gosudarstvennogo universiteta. Matematika i mehanika, no. 3 (2013), pp. 34-36. http://geodesic.mathdoc.fr/item/VTGU_2013_3_a3/

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