ウォルター・ゴーチ (Walter Gautschi、1927年12月11日『Walter Gautschi, Volume 3: Selected Works with Commentaries』 p.765 - ）は数値解析を専門とするアメリカ合衆国の数学者。スイス・バーゼル出身。直交多項式に関する著書で知られる。
著書 Numerical analysis: an introduction, Birkhäuser, Boston, 1997; 2nd edition, 2012. Orthogonal polynomials: computation and approximation, :en:Oxford University Press, Oxford, 2004. Walter Gautschi, Selected Works with Commentaries, Springer Science & Business Media, 2013, 3 vols., Brezinski, Claude, and Ahmed Sameh, eds. volume 1; volume 2; volume 3. Orthogonal polynomials in MATLAB: exercises and solutions, SIAM, Philadelphia, 2016.
解説記事 Gander, W., & Gautschi, W. (2000). Adaptive quadrature—revisited. :en:BIT Numerical Mathematics, 40(1), 84-101. Gautschi, W. (1996). Orthogonal polynomials: applications and computation. :en:Acta Numerica, 5, 45-119. Gautschi, W. (1981). A survey of Gauss-Christoffel quadrature formulae. In EB Christoffel (pp. 72-147). Birkhäuser, Basel. Gautschi, W. (1967). Computational aspects of three-term recurrence relations. SIAM Review, 9(1), 24-82.
代表的な論文 単著 Gautschi, W. (1959). Some elementary inequalities relating to the gamma and incomplete gamma function. Journal of Mathematics and Physics, 38(1-4), 77-81. Gautschi, W. (1961). Numerical integration of ordinary differential equations based on trigonometric polynomials. :en:Numerische Mathematik, 3(1), 381-397. Gautschi, W. (1962). On inverses of Vandermonde and confluent Vandermonde matrices. :en:Numerische Mathematik, 4(1), 117-123. Gautschi, W. (1968). Construction of Gauss-Christoffel quadrature formulas. Math. Comp, 22(102), 251-270. Gautschi, W. (1970). Efficient computation of the complex error function. :en:SIAM Journal on Numerical Analysis, 7(1), 187-198. Gautschi, W. (1970). On the construction of Gaussian quadrature rules from modified moments. :en:Mathematics of Computation, 24(110), 245-260. Gautschi, W. (1982). On generating orthogonal polynomials. SIAM Journal on Scientific and Statistical Computing, 3(3), 289-317. Gautschi, W. (1994). Algorithm 726: ORTHPOL–a package of routines for generating orthogonal polynomials and Gauss-type quadrature rules. ACM Transactions on Mathematical Software (TOMS), 20(1), 21-62.
共著 Gautschi, W., & Varga, R. S. (1983). Error bounds for Gaussian quadrature of analytic functions. :en:SIAM Journal on Numerical Analysis, 20(6), 1170-1186. Flury, B. N., & Gautschi, W. (1986). An algorithm for simultaneous orthogonal transformation of several positive definite symmetric matrices to nearly diagonal form. SIAM Journal on Scientific and Statistical Computing, 7(1), 169-184. Gautschi, W., & Inglese, G. (1987). Lower bounds for the condition number of Vandermonde matrices. :en:Numerische Mathematik, 52(3), 241-250.
関連文献 Stetter, Hans J. (1999). "Review of Numerical analysis, an introduction by Walter Gautschi". Math. Comp. 68 (226): 887. doi:10.1090/S0025-5718-99-01151-5. Segura, Javier (June 2006). "Review of Orthogonal Polynomials: Computation and Approximation by Walter Gautschi". SIAM Review. 48 (2): 431–433. JSTOR 20453824.
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