is_polynomial with symbolic coefficients: bug ?

alessandro
11 ●2 ●4 ●4

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

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

False

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

True

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

Is this a bug ?

Who and howto report ?

2 Answers

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Luca
890 ●6 ●21

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

alessandro
11 ●2 ●4 ●4

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

returns True

Check this case also...

Thanks.

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Asked: 2013-10-17 16:50:31 +0100

Seen: 358 times

Last updated: Oct 18 '13