sturm theorem
71Rayleigh quotient — In mathematics, for a given complex Hermitian matrix A and nonzero vector x, the Rayleigh quotient R(A, x) is defined as::{x^{*} A x over x^{*} x}For real matrices and vectors, the condition of being Hermitian reduces to that of being symmetric,… …
72Internal rate of return — The internal rate of return (IRR) is a capital budgeting metric used by firms to decide whether they should make investments. It is an indicator of the efficiency or quality of an investment, as opposed to net present value (NPV), which indicates …
73Orthonormal basis — In mathematics, particularly linear algebra, an orthonormal basis for inner product space V with finite dimension is a basis for V whose vectors are orthonormal.[1][2][3] For example, the standard basis for a Euclidean space Rn is an orthonormal… …
74Inverse problem — An inverse problem is a general framework that is used to convert observed measurements into information about a physical object or system that we are interested in. For example, if we have measurements of the Earth s gravity field, then we might …
75Generalized Fourier series — In mathematical analysis, many generalizations of Fourier series have proved to be useful.They are all special cases of decompositions over an orthonormal basis of an inner product space.Here we consider that of square integrable functions… …
76Theory of equations — In mathematics, the theory of equations comprises a major part of traditional algebra. Topics include polynomials, algebraic equations, separation of roots including Sturm s theorem, approximation of roots, and the application of matrices and… …
771860 — Portal Geschichte | Portal Biografien | Aktuelle Ereignisse | Jahreskalender ◄ | 18. Jahrhundert | 19. Jahrhundert | 20. Jahrhundert | ► ◄ | 1830er | 1840er | 1850er | 1860er | 1870er | 1880er | 1890er | ► ◄◄ | ◄ | 1856 | 1857 | 1858 | 18 …
78Hans Grauert — in Moskau, 1966 Hans Grauert (* 8. Februar 1930 in Haren/Ems; † 4. September 2011 in Göttingen) galt als einer der bedeutendsten deutschen Mathematiker der Nachkriegszeit. Sein Spezialgebiet war die Funktionentheorie mehrerer Veränderlicher …
79Heinrich Vogt (Astronom) — Heinrich Vogt, (* 5. Oktober 1890 in Gau Algesheim, Rheinland Pfalz; † 23. Januar 1968 in Heidelberg) war ein deutscher Astronom. Inhaltsverzeichnis 1 Leben 2 Werke 3 Weblinks …
80Modus Procedendi — Lateinische Phrasen A B C D E F G H I L M N O P …
