Simultaneous approximation of modulus and values of Jacobi elliptic functions (in Ukrainian)

Author Ya. M. Kholyavka
ya_khol@franko.lviv.ua
Ivan Franko National University of L'viv

Abstract Let $\operatorname{sn}_i z$ be algebraically independent Jacobi elliptic functions, $(4K_i,2iK'_i)$ be main periods and $\varkappa_1, \varkappa_2$ be their moduli $\operatorname{sn}_i z$ ($i\in\{1,2\}$). We estimate from below the simultaneous approximation $\varkappa_1, \varkappa_2, \operatorname{sn}_1 K_2, \operatorname{sn}_2i K'_1$.
Keywords simultaneous approximation; Jacobi elliptic function
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Pages 10-15
Volume 39
Issue 1
Year 2013
Journal Matematychni Studii
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