Inequalities between the radii of spheres that are connected with a convex surface in a space of constant curvature.
Ionin, V.K. (2001)
Sibirskij Matematicheskij Zhurnal
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Ionin, V.K. (2001)
Sibirskij Matematicheskij Zhurnal
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Kuznetsov, V.V. (2000)
Siberian Mathematical Journal
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Kuznetsov, V.V. (2000)
Sibirskij Matematicheskij Zhurnal
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Zelenyak, T.I., Lyul'ko, N.A. (2000)
Siberian Mathematical Journal
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Kuznetsov, D.S. (2001)
Sibirskij Matematicheskij Zhurnal
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Borovkov, A.A., Mogul'skij, A.A. (2001)
Sibirskij Matematicheskij Zhurnal
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Begmatov, A.Kh. (2000)
Siberian Mathematical Journal
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Yarmukhamedov, Sharof (2002)
Sibirskij Matematicheskij Zhurnal
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Xu, Xian (2004)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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Sabitov, K.B., Kuchkarova, A.N. (2001)
Sibirskij Matematicheskij Zhurnal
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Marco Riccardi (2009)
Formalized Mathematics
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In this article, the principal n-th root of a complex number is defined, the Vieta's formulas for polynomial equations of degree 2, 3 and 4 are formalized. The solution of quadratic equations, the Cardan's solution of cubic equations and the Descartes-Euler solution of quartic equations in terms of their complex coefficients are also presented [5].
Rudykh, G.A., Semenev, Eh.I. (2001)
Siberian Mathematical Journal
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Bravyi, Evgeniy I., Gusarenko, Sergey S. (2004)
Electronic Journal of Differential Equations (EJDE) [electronic only]
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