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is_polynomial with symbolic coefficients: bug ?

asked 2013-10-17 16:50:31 +0200

alessandro gravatar image

sage: s, a, b= var('s a b')

sage: (1/s^2 + s).is_polynomial(s)


sage: (a/s^2 + b*s).is_polynomial(s)


Should the second call of is_polynomial not return False as in the first case ?

Is this a bug ?

Who and howto report ?

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answered 2013-10-18 04:54:38 +0200

Luca gravatar image

This is a bug. Thanks for reporting it. It is ticket #15304 now.

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answered 2013-10-18 10:18:11 +0200

alessandro gravatar image

(s/(s^3+2*s) + 3).is_polynomial(s)

returns True

Check this case also...


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Asked: 2013-10-17 16:50:31 +0200

Seen: 299 times

Last updated: Oct 18 '13