Problem in defining new environment

Question

Since I want to add line number in my manuscript, I have to wrap align environment into linenomath environment to have right numbering. I wanted to define new environment in preamble in which I want Latex to put the math inputting into these environments, but It didn't work. Can you help me please? Here is my codes.

\documentclass{article}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}
\usepackage[switch*, displaymath,pagewise, mathlines]{lineno}
\leftlinenumbers
\linenumbers

\newenvironment{Align}{\begin{linenomath*}  \begin{align}}{\end{align}   
\end{linenomath*}}

\begin{document}
\begin{Align}
x+y=10
\end{Align}
\end{document}

Not clear what you want. Should lines of display maths be numbered or not? — Bernard, Sep 25 '16 at 12:28
... "but it didn't work". Please be more specific. E.g., do tell us if you get an error and/or warning messages. — Mico, Sep 25 '16 at 12:38
@Bernard I guess line numbers should be omitted for aligned math. — gernot, Sep 25 '16 at 13:31
@gernot: But that is the default! B.t.w., the displaymath is obsolete: it's the default now. — Bernard, Sep 25 '16 at 13:33
@Bernard True. Strange. So the purpose remains a mystery, but the problem is solved ;-) — gernot, Sep 25 '16 at 13:37

score 2 · Accepted Answer · edited Apr 13 '17 at 12:34

2

This is a particular problem of the align environment, see also newenvironment: error with \begin{align} and \end{align}. In your case, you have to define your environment as

\newenvironment{Align}%
  {\linenomathNonumbers\align}%
  {\endalign\endlinenomath}

edited Apr 13 '17 at 12:34

Community

1

answered Sep 25 '16 at 12:40

gernot

49,614

Yes, but lineno doesn't seem to work correctly with align: it displays two consecutive numbers (one above the other) for the last line, even if there's only one line. – Bernard Sep 25 '16 at 13:32
@Bernard Well, no harm is done: \linenomathNonumbers suppresses line numbers. – gernot Sep 25 '16 at 13:42

Problem in defining new environment

1 Answers1