1 | initial version |

I cannot reproduce your error, the error I get is :

```
PariError: I already exists with incompatible valence
```

which is fine. Indeed, the product of a polynomial indeterminate defined over a finite field and `I`

(which belongs to a field of characteristic 0) is not well defined. If `I`

is defined as another indeterminate, everything is fine:

```
sage: K.<a1,b1,a2,b2,x,I>=PolynomialRing(GF(32003))
sage: numerator((a1+b1*I)+(a1-b1*I)*x^(-5))
b1*x^5*I + a1*x^5 - b1*I + a1
```

In your case, the error is more annoying since it is not handled by Sage, and as the log says "his probably occurred because a *compiled* module has a bug in it and is not properly wrapped with sig_on(), sig_off(). Python will now terminate."

When you compiled Sage, and especially Pari, did you get any error ? Coud you look at the file `$SAGE_ROOT/logs/pkgs/pari-2.8-*.log`

to see if something wrong happened there ?

If you do not find anything, could you try, from the `$SAGE_ROOT`

direcory:

```
./sage -p -c pari
```

To build pari and run a self-check ?

2 | No.2 Revision |

I cannot reproduce your error, the error I get is :

```
PariError: I already exists with incompatible valence
```

which is fine. Indeed, the product of a polynomial indeterminate defined over a finite field and `I`

(which belongs to a field of characteristic 0) is not well defined. If `I`

is defined as another indeterminate, everything is fine:

```
sage: K.<a1,b1,a2,b2,x,I>=PolynomialRing(GF(32003))
sage: numerator((a1+b1*I)+(a1-b1*I)*x^(-5))
b1*x^5*I + a1*x^5 - b1*I + a1
```

In your case, the error is more annoying since it is not handled by Sage, and as the log says "his probably occurred because a *compiled* module has a bug in it and is not properly wrapped with sig_on(), sig_off(). Python will now terminate."

When you compiled Sage, and especially Pari, did you get any error ? Coud you look at the file `$SAGE_ROOT/logs/pkgs/pari-2.8-*.log`

to see if something wrong happened there ?

If you do not find anything, could you try, from the `$SAGE_ROOT`

direcory:

```
./sage -p -c pari
```

To ~~build ~~rebuild pari and run a self-check ?

3 | No.3 Revision |

I cannot reproduce your error, the error I get is :

```
PariError: I already exists with incompatible valence
```

which is fine. Indeed, the product of a polynomial indeterminate defined over a finite field and `I`

(which belongs to a field of characteristic 0) is not well defined. If `I`

is defined as another indeterminate, everything is fine:

```
sage: K.<a1,b1,a2,b2,x,I>=PolynomialRing(GF(32003))
sage: numerator((a1+b1*I)+(a1-b1*I)*x^(-5))
b1*x^5*I + a1*x^5 - b1*I + a1
```

In your case, the error is more annoying since it is not handled by Sage, and as the log says "his probably occurred because a *compiled* module has a bug in it and is not properly wrapped with sig_on(), sig_off(). Python will now terminate."

When you compiled Sage, and especially Pari, did you get any error ? Coud you look at the file `$SAGE_ROOT/logs/pkgs/pari-2.8-*.log`

to see if something wrong happened there ?

If you do not find anything, could you try, from the `$SAGE_ROOT`

direcory:

` ./sage `~~-p ~~-i -f -c pari

To rebuild pari and run a self-check ?

Copyright Sage, 2010. Some rights reserved under creative commons license. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.