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# EIGEN VALUE DECOMPOSING DEVICE AND EIGEN VALUE DECOMPOSING METHOD

外国特許コード F080001955 F080001955 2008年10月16日 世界知的所有権機関（ＷＩＰＯ） 2007JP051575 WO 2008/018188 平成19年1月31日(2007.1.31) 平成20年2月14日(2008.2.14) 特願2006-215660 (2006.8.8) JP EIGEN VALUE DECOMPOSING DEVICE AND EIGEN VALUE DECOMPOSING METHOD [PROBLEMS] An eigenvalue decomposing device capable of performing parallel processing at high speed with high accuracy. [MEANS FOR SOLVING PROBLEMS] An eigenvalue decomposing device comprises a matrix decomposing section (14) for repeating division of a symmetric tridiagonal matrix (T) into two symmetric tridiagonal matrices, an eigenvalue decomposing section (15) for performing eigenvalue decomposition of the divided symmetric tridiagonal matrices, an eigenvalue calculating section (17) for repeating calculation of the eigenvalue of the symmetric tridiagonal matrix before the division and the matrix elements of the symmetric tridiagonal matrix before the division from the eigenvalue subjected to the eigenvalue decomposition by the eigenvalue decomposition section (15) and matrix elements which are a part of the elements of an orthogonal matrix composed of eigenvectors until the eigenvalue of the symmetric tridiagonal matrix (T) is calculated, and an eigenvector calculating section (19) for calculating the eigenvectors of the symmetric tridiagonal matrix (T) by the twist decomposition form the symmetric tridiagonal matrix T and its eigenvalue. Kyoto University Nakamura, Yoshimasa Tsuboi, Hiroaki Konda, Taro Iwasaki, Masashi Takata, Masami G06F  17/13      微分方程式を解くためのもの AE AG AL AM AT AU AZ BA BB BE BF BG BJ BR BW BY BZ CA CF CG CH CI CM CN CO CR CU CY CZ DE DK DM DZ EC EE EG ES FI FR GA GB GD GE GH GM GN GQ GR GT GW HN HR HU ID IE IL IN IS IT JP KE KG KM KN KP KR KZ LA LC LK LR LS LT LU LV LY MA MC MD MG MK ML MN MR MW MX MY MZ NA NE NG NI NL NO NZ OM PG PH PL PT RO RS RU SC SD SE SG SI SK SL SM SN SV SY SZ TD TG TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
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