Some integral operators and their univalence.
Pescar, Virgil, Breaz, Daniel (2008)
Acta Universitatis Apulensis. Mathematics - Informatics
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Pescar, Virgil, Breaz, Daniel (2008)
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Kuznetsov, V.V. (2000)
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Kuznetsov, V.V. (2000)
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Pettineo, Maria (2004)
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Borovkov, A.A., Mogul'skij, A.A. (2001)
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Ionin, V.K. (2001)
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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].
Kerimov, N. B., Mirzoev, V. S. (2003)
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