Bug in latex for power series with greek variable names

[roed314]

sage: R.<beta> = QQ[]
sage: S.<x> = R[[]]
sage: latex(beta*x)
\betax

See also:

• Fix LaTeX of free algebras (and repr_lincomb) #14509 Fix LaTeX of free algebras (and repr_lincomb)

Depends on #29892

CC: @slel

Component: algebra

Author: Hoa Nguyen

Branch/Commit: c98e706

Reviewer: Frédéric Chapoton

Issue created by migration from https://trac.sagemath.org/ticket/26606

[DaveWitteMorris]

comment:1

The bug will probably be easy to fix if its location in the source code can be found. Presumably, the latex string for a power series is constructed by concatenating the latex strings of its parts. To kill the bug, add a space in between: change latex(a) + latex(b) to latex(a) + ' ' + latex(b). This is safe, because latex ignores extraneous spaces in math formulas.

(For anyone who does not know latex: \betax should be \beta x.)

[mkoeppe]

Dependencies: #29869

[mkoeppe]

Changed dependencies from #29869 to #29892

[hnpl]

Branch: u/hoanguyen/bug_in_latex_for_power_series_with_greek_variable_names

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

dd4e4d3

Add a space between x and var in PowerSeries._latex_()

[sagetrac-git]

Commit: dd4e4d3

[fchapoton]

comment:8

Hello, please

• add your full real name here above in the Authors: field of the trac page

• add a doctest for your fix in the modified method documentation

• set the status to "needs_review" once done

[sagetrac-git]

Changed commit from dd4e4d3 to 2823ab4

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

2823ab4

Add doctest

[hnpl]

Author: Hoa Nguyen

[sagetrac-git]

Branch pushed to git repo; I updated commit sha1. New commits:

534e473	Removing trailing whitespaces on the left using str.lstrip(" ")
c98e706	Modify previous doctest of PowerSeries._latex_()

[sagetrac-git]

Changed commit from 2823ab4 to c98e706

[fchapoton]

comment:12

ok, thanks. Looks good

[fchapoton]

Reviewer: Frédéric Chapoton

[vbraun]

Changed branch from u/hoanguyen/bug_in_latex_for_power_series_with_greek_variable_names to c98e706