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## Re: [Axiom-developer] TeX output of a**bc

**From**: |
kp |

**Subject**: |
Re: [Axiom-developer] TeX output of a**bc |

**Date**: |
Wed, 11 Jul 2012 21:10:28 +0200 |

**User-agent**: |
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20120614 Thunderbird/13.0.1 |

Yes, indeed. I didn't even think of the interpretation as a^{b c}
because in fact c were integers in my examples, so it didn't attract
much attention when rendered, but it's definitively not to distinguish
when c is literal. I have to review my workaround.
Thank you for pointing this out.
Kurt
Am 11.07.2012 19:48, schrieb William Sit:
>* In TeX, a^bc would be interpreted mathematically as (a^b)c, whereas*
>* a^{bc} would be interpreted as a^{b c}, where the exponent is a product*
>* of b and c, or an application of b on c. Neither interpretation is what*
>* is intended if bc is a single identifier.*
>* *
>* One would need something like a^{\rm bc}, but even that is possibly*
>* ambiguous; but some change in font is needed.*
>* *
>* William*
>* *
>* *
>* *
>* On Tue, 10 Jul 2012 21:48:10 +0200*
>* kp <address@hidden> wrote:*
>*> Hello,*
>*>*
>*> by accident I noticed the following irregularity in the TeX output*
>*> (missing {}):*
>*>*
>*> a**bc (or a^bc).*
>*>*
>*> Axiom:*
>*> $$*
>*> a^bc*
>*> \leqno(4)*
>*> $$*
>*>*
>*> OpenAxiom, Fricas:*
>*> $$*
>*> a \sp bc*
>*> \leqno(6)*
>*> $$*
>*>*
>*> Usually, one uses only one character variables :)*
>*> I'm using Axiom mostly via Python (TeXmacs, IPython) so that*
>*> re.sub(r"\\sp ([^ \t\r\n\f\v\\]*)", r"^{\1}", tex)*
>*> is a workaround for the moment.*
>*>*
>*> Cheers*
>*> Kurt*
>*>*
>*>*
>*> _______________________________________________*
>*> Axiom-developer mailing list*
>*> address@hidden*
>*> https://lists.nongnu.org/mailman/listinfo/axiom-developer*
>* *
>* William Sit, Professor Emeritus*
>* Mathematics, City College of New York*
>* Office: R6/291D Tel: 212-650-5179*
>* Home Page: http://scisun.sci.ccny.cuny.edu/~wyscc/*