Problem with pdflatex.

[Venkataraman S]

I am using sage 7.6.  Recently installed GAP packages. The following
input produces pdflatex error.
R=PolynomialRing(RR,'x')
points=[(0,1),(1,-3),(2,33),(3,589)]
f=R.lagrange_polynomial(points)
produces the following error message.
**********************

ARNING: Output truncated!  

full_output.txt

An error occurred.
This is pdfTeX, Version 3.14159265-2.6-1.40.18 (TeX Live 2017) (preloaded format=pdflatex 2017.6.11)  13 SEP 2017 10:22
entering extended mode
 restricted \write18 enabled.
 %&-line parsing enabled.
**\nonstopmode \input{sage48.tex}
(./sage48.tex (/opt/texlive/2017/texmf-dist/tex/latex/base/article.cls
Document Class: article 2014/09/29 v1.4h Standard LaTeX document class
(/opt/texlive/2017/texmf-dist/tex/latex/base/size10.clo
File: size10.clo 2014/09/29 v1.4h Standard LaTeX file (size option)
)
\c@part=\count79
\c@section=\count80
\c@subsection=\count81
\c@subsubsection=\count82
\c@paragraph=\count83
\c@subparagraph=\count84
\c@figure=\count85
\c@table=\count86
\abovecaptionskip=\skip41
\belowcaptionskip=\skip42
\bibindent=\dimen102
)
(/opt/texlive/2017/texmf-dist/tex/latex/amsmath/amsmath.sty
Package: amsmath 2016/11/05 v2.16a AMS math features
\@mathmargin=\skip43

For additional information on amsmath, use the `?' option.
(/opt/texlive/2017/texmf-dist/tex/latex/amsmath/amstext.sty
Package: amstext 2000/06/29 v2.01 AMS text

(/opt/texlive/2017/texmf-dist/tex/latex/amsmath/amsgen.sty
File: amsgen.sty 1999/11/30 v2.0 generic functions
\@emptytoks=\toks14
\ex@=\dimen103
))
(/opt/texlive/2017/texmf-dist/tex/latex/amsmath/amsbsy.sty
Package: amsbsy 1999/11/29 v1.2d Bold Symbols
\pmbraise@=\dimen104
)
(/opt/texlive/2017/texmf-dist/tex/latex/amsmath/amsopn.sty
Package: amsopn 2016/03/08 v2.02 operator names
)
\inf@bad=\count87
LaTeX Info: Redefining \frac on input line 213.
\uproot@=\count88
\leftroot@=\count89
LaTeX Info: Redefining \overline on input line 375.
\classnum@=\count90
\DOTSCASE@=\count91
LaTeX Info: Redefining \ldots on input line 472.
LaTeX Info: Redefining \dots on input line 475.
LaTeX Info: Redefining \cdots on input line 596.
\Mathstrutbox@=\box26
\strutbox@=\box27
\big@size=\dimen105
LaTeX Font Info:    Redeclaring font encoding OML on input line 712.
LaTeX Font Info:    Redeclaring font encoding OMS on input line 713.
\macc@depth=\count92

...

(/opt/texlive/2017/texmf-dist/tex/latex/latexconfig/epstopdf-sys.cfg
File: epstopdf-sys.cfg 2010/07/13 v1.3 Configuration of (r)epstopdf for TeX Liv
e
))
! Missing $ inserted.
<inserted text> 
                $
l.37 f=R.lagrange_
                  polynomial(points)
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

LaTeX Font Info:    Try loading font information for U+msa on input line 37.
(/opt/texlive/2017/texmf-dist/tex/latex/amsfonts/umsa.fd
File: umsa.fd 2013/01/14 v3.01 AMS symbols A
)
LaTeX Font Info:    Try loading font information for U+msb on input line 37.

(/opt/texlive/2017/texmf-dist/tex/latex/amsfonts/umsb.fd
File: umsb.fd 2013/01/14 v3.01 AMS symbols B
)
LaTeX Font Info:    Try loading font information for U+rsfs on input line 37.

(/opt/texlive/2017/texmf-dist/tex/latex/jknapltx/ursfs.fd
File: ursfs.fd 1998/03/24 rsfs font definition file (jk)
)
! Missing $ inserted.
<inserted text> 
                $
l.38 
     
I've inserted a begin-math/end-math symbol since I think
you left one out. Proceed, with fingers crossed.

[1

{/opt/texlive/2017/texmf-var/fonts/map/pdftex/updmap/pdftex.map}]
(./sage48.aux) ) 
Here is how much of TeX's memory you used:
 2910 strings out of 494387
 35547 string characters out of 6169481
 89603 words of memory out of 5000000
 6326 multiletter control sequences out of 15000+600000
 6597 words of font info for 26 fonts, out of 8000000 for 9000
 286 hyphenation exceptions out of 8191
 40i,4n,26p,260b,110s stack positions out of 5000i,500n,10000p,200000b,80000s
{/opt/texlive/2017/texmf-dist/fonts/enc/dvips/cm-super/cm-super
-t1.enc}</opt/texlive/2017/texmf-dist/fonts/type1/public/amsfonts/cm/cmmi10.pfb
></opt/texlive/2017/texmf-dist/fonts/type1/public/amsfonts/cm/cmmi7.pfb></opt/t
exlive/2017/texmf-dist/fonts/type1/public/amsfonts/cm/cmr10.pfb></opt/texlive/2
017/texmf-dist/fonts/type1/public/cm-super/sfrm1000.pfb>
Output written on sage48.pdf (1 page, 35076 bytes).
PDF statistics:
 25 PDF objects out of 1000 (max. 8388607)
 17 compressed objects within 1 object stream
 0 named destinations out of 1000 (max. 500000)
 1 words of extra memory for PDF output out of 10000 (max. 10000000)


None
**********************************************
It seems to object to underscore in lagrange_interpolation and demands opening
and closing dollars.
Best,

[slelievre]

Wed 2017-09-13 05:11:50 UTC, Venkataraman S:

> I am using sage 7.6.  Recently installed GAP packages.

> The following input produces pdflatex error.

>

> R=PolynomialRing(RR,'x')

> points=[(0,1),(1,-3),(2,33),(3,589)]

> f=R.lagrange_polynomial(points)

> produces the following error message.

You seem to be working in the legacy SageNB notebook.

When you are viewing that worksheet, you can see on the top left,

under the worksheet's title, four menus looking like

    [ File... ]  [ Action... ]  [ Data... ]  [ xxx ]

The "xxx" in the last one should be "sage", not "latex".

If you want your output to be typeset, check the "Typeset"

checkbox just right of these four menus.

[Venkataraman S]

Thanks a lot. It
Best,