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2016-04-21 05:08:15 -0600 | commented question | rational numbers with cython Sorry, I don't know how to use mpq_t attribute. Should I import some library for it? How do it? Thanks in advance. |

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2016-04-20 12:41:05 -0600 | commented question | rational numbers with cython I re-edited with an example. Thanks. |

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2016-04-20 10:07:20 -0600 | asked a question | rational numbers with cython I want to work efficiently with rational numbers under the context %cython but I don`t know how. Can anyone suggest any ideas? Thank you. An example: |

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2015-05-04 08:59:21 -0600 | asked a question | LU decomposition for a matrix There is an inconsistency in the use of the LU decomposition of a matrix. If matrix A is declared in the RDF ring then P, L, U = A.LU () provides PA = LU but if A is declared in the RR ring (or QQ, ZZ,...) then A = PLU. Therefore in a case P is P.transpose () on the other. |

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