• In mathematics and in particular the field of complex analysis, Hurwitz's theorem is a theorem associating the zeroes of a sequence of holomorphic, compact...
    6 KB (772 words) - 15:39, 26 February 2024
  • Hurwitz's theorem can refer to several theorems named after Adolf Hurwitz: Hurwitz's theorem (complex analysis) Riemann–Hurwitz formula in algebraic geometry...
    394 bytes (73 words) - 14:33, 7 September 2023
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    Riemann–Roch theorem. Argument principle Control theory § Stability Filter design Filter (signal processing) Gauss–Lucas theorem Hurwitz's theorem (complex analysis)...
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  • mathematics, the Routh–Hurwitz theorem gives a test to determine whether all roots of a given polynomial lie in the left-half complex plane. Polynomials with...
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    C}(0)=N_{g}(K).} Fundamental theorem of algebra – Every polynomial has a real or complex root Hurwitz's theorem (complex analysis) – Limit of roots of sequence...
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  • The Riemann–Roch theorem is an important theorem in mathematics, specifically in complex analysis and algebraic geometry, for the computation of the dimension...
    32 KB (4,966 words) - 09:47, 13 June 2025
  • Thumbnail for Adolf Hurwitz
    Hurwitz scheme Hurwitz surface Hurwitz zeta function Hurwitz's automorphisms theorem Hurwitz's theorem (complex analysis) Hurwitz's theorem (composition...
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  • analysis) Hurwitz's automorphisms theorem (algebraic curves) Hurwitz's theorem (complex analysis) Identity theorem (complex analysis) Identity theorem for Riemann...
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    In complex analysis, the Riemann mapping theorem states that if U {\displaystyle U} is a non-empty simply connected open subset of the complex number...
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    reals, complex numbers, quaternions and octonions are all normed division algebras over R {\displaystyle \mathbb {R} } . By Hurwitz's theorem they are...
    91 KB (12,021 words) - 17:33, 29 May 2025
  • is quite safe). This formula is known as the Riemann–Hurwitz formula and also as Hurwitz's theorem. Another useful form of the formula is: χ ( S ′ ) −...
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  • In mathematics, Hurwitz's theorem is a theorem of Adolf Hurwitz (1859–1919), published posthumously in 1923, solving the Hurwitz problem for finite-dimensional...
    28 KB (3,682 words) - 00:14, 19 May 2025
  • Sturm's theorem, this gives the number of roots of P such that Q(a) > 0 and the number of roots of P such that Q(a) < 0. Routh–Hurwitz theorem Hurwitz's theorem...
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  • Marden's theorem Bôcher's theorem Sendov's conjecture Routh–Hurwitz theorem Hurwitz's theorem (complex analysis) Descartes' rule of signs Rouché's theorem Properties...
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  • In mathematics, the Carathéodory kernel theorem is a result in complex analysis and geometric function theory established by the Greek mathematician Constantin...
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    duality Branching theorem Hurwitz's automorphisms theorem Identity theorem for Riemann surfaces Riemann–Roch theorem Riemann–Hurwitz formula Farkas & Kra...
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  • principle of complex analysis requires no eigenvalue continuity of any kind. For a brief discussion and clarification, see. The Gershgorin circle theorem is useful...
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  • of isometries of an hyperbolic surface of genus g {\displaystyle g} . Hurwitz's bound then implies that the maximal order is equal to 84 ( g − 1 ) {\displaystyle...
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  • In matrix theory, the Perron–Frobenius theorem, proved by Oskar Perron (1907) and Georg Frobenius (1912), asserts that a real square matrix with positive...
    58 KB (8,224 words) - 08:53, 27 May 2025
  • Thumbnail for Hurwitz zeta function
    derived by employing the functional equation together with Hurwitz's formula, given above. Hurwitz's zeta function occurs in a variety of disciplines. Most...
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  • Thumbnail for Bernhard Riemann
    complex analysis include most notably the introduction of Riemann surfaces, breaking new ground in a natural, geometric treatment of complex analysis...
    26 KB (2,926 words) - 16:58, 21 March 2025
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    normed division algebras over the real numbers are also very rare: Hurwitz's theorem says that there are only four: R {\displaystyle \mathbb {R} } , C...
    96 KB (12,674 words) - 14:32, 18 June 2025
  • Sturm's theorem in evaluating Cauchy indices. Hurwitz derived his conditions differently. The criterion is related to Routh–Hurwitz theorem. From the...
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  • Belevitch's theorem is a theorem in electrical network analysis due to the Russo-Belgian mathematician Vitold Belevitch (1921–1999). The theorem provides...
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  • algebra with involution of twice the dimension.: 45  Hurwitz's theorem states that the reals, complex numbers, quaternions, and octonions are the only finite-dimensional...
    21 KB (2,554 words) - 06:23, 7 May 2025
  • quite safe). This formula is known as the Riemann–Hurwitz formula and also as Hurwitz's theorem. Hurwitz-Courant, Vorlesunger über allgemeine Funcktionen...
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    factorization theorem—that any entire function can be written as a product over its zeros in the complex plane; a generalization of the fundamental theorem of algebra...
    90 KB (13,517 words) - 14:18, 9 June 2025
  • Pi (category Complex analysis)
    circle group U(1) of unit modulus complex numbers. It is a theorem that every character of T is one of the complex exponentials e n ( x ) = e 2 π i n...
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  • connected semisimple Lie groups and complex semisimple Lie algebras goes sometimes under the name of Weyl's theorem. A related result, that the universal...
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  • In the mathematical field of complex analysis, Nevanlinna theory is part of the theory of meromorphic functions. It was devised in 1925, by Rolf Nevanlinna...
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