Changes between Initial Version and Version 8 of Ticket #14334
 Timestamp:
 Jul 17, 2013, 2:52:18 PM (10 years ago)
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Ticket #14334

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toneeds_review

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Frédéric Chapoton

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Ticket #14334 – Description
initial v8 1 So far (in sage 5. 7), the integral of multivariable polynomial is not clean, and belongs to the symbolic ring1 So far (in sage 5.10), the integral of multivariable polynomial is not clean, and belongs to the symbolic ring 2 2 {{{ 3 sage: x,y = polygen( ZZ,['x','y'])4 sage: (x*y).integral( )3 sage: x,y = polygen(QQ, ['x','y']) 4 sage: (x*y).integral(x) 5 5 Traceback (most recent call last) 6 6 ... 7 7 AttributeError: 'sage.rings.polynomial.multi_polynomial_libsingular.MPolynomial_libsingular' object has no attribute 'integral' 8 8 }}} 9 But one can do this: 10 {{{ 9 11 sage: integrate(x*y,x) 10 12 1/2*x^2*y … … 15 17 It would be much better to have a .integral attribute and to stay within polynomial rings, like it happens with just one variable 16 18 {{{ 17 sage: x = polygen( ZZ,'x')19 sage: x = polygen(QQ, 'x') 18 20 sage: x.integral().parent() 19 21 Univariate Polynomial Ring in x over Rational Field