General ⇒ Strange Compilation Errors

[StarKid]

My file suddenly has compilation errors on lines that I haven't even edited recently. They are erros like:

Code: Select all

LaTeX Font Info:    Try loading font information for U+msb on input line 250.

And line 250 is

Code: Select all

We focus on the choice of a consumer moving to a particular area in year $t$, who is

So I commented it out and recompiled; same error for line 263, which has text

Code: Select all

of $\theta$ times the price, which is denoted $P_{t}$. Homeowners finance the rest of the mortgage, rolling

and on and one for lines 264-266 (except its U+msa instead of U+msb in those cases). Each following error doesn't show up unless the line containing the previous error is commented out. Line 266 is as far as I've looked because the file is large. I'm using Kile but the result is the same in other editors I've tried.

[localghost]

There are no errors, just information about font loading. A proper minimal example will certainly help to get a clue. Due to missing information it's not possible to tell anything specific at the moment.


Thorsten

[StarKid]

Ok, I chopped up the file and the problem seems to be incorrect syntax in the \renewcommand with which I attempted to change equation numbering.

I did a CTAN search but I can't figure out what package \renewcommand is in, or maybe I should look at math package documentation to find the correct syntax for changing equation numbering?

Someone please point me in the right direction.

[sommerfee]

I did a ctan search but I can't figure out what package renewcommand is in...

\renewcommand is a basic LaTeX command, so it's not part of a package but the LaTeX kernel instead.

If you would post a mininal example document we would (hopefully) be able to help you. (See post from localghost)

[Stefan Kottwitz]

Hi,

I did a ctan search but I can't figure out what package renewcommand is in...

have a look at Definitions in the LaTeX manual, the command is explained there.

Stefan

[StarKid]

Well here is the MWE.

Code: Select all

\documentclass[a4paper,12pt,leqno]{report}
\usepackage{amsmath}
\usepackage{amsfonts}
\usepackage{amssymb}


\begin{document}


\begin{equation}
        \theta P_t + \sum_{j=1}^{\infty}
            \left(\frac{1-\delta}{1+\rho_t^{t+j}}\right)^j
            \frac{1}{1-\delta}
            \left\{
                \begin{array}{c}
                    r_{t+j} (1-\phi)(1-\theta)P_t + \tau (1+g)^{j-1} P_t \\
                    -\delta\left[P_{t+j} - (1-\theta) P_t\right]
                \end{array}
            \right\}
 \end{equation}


\renewcommand{\theequation}{2'}

\begin{equation}
P_{t} \left( \frac{\theta_{\rho_{t}}+(1-\theta)(1-\varphi)r-g+\tau+g(1-\theta)(1-\delta) \frac{\rho_{t}-(1-\varphi)r}{\rho_{t}+\delta}}{\rho_{t}+\delta+g\delta-g} \right).
\end{equation}


\renewcommand{\theequation}{2''}
\begin{equation}
	\frac{R_{t}}{P_{t}} =\theta\rho_{t}+(1-\theta)(1-\varphi)r-g+\tau+g(1-\theta)(1-\delta)\frac{\rho_{t}-(1-\varphi)r}{\rho_{t}+\delta}.
\end{equation}

\renewcommand{\theequation}{\theequation}

\footnotesize
\begin{equation}
\frac{R_{t}}{P_{t}}=\theta\hat{\rho}(\hat{r})-\varphi\pi+(1-\theta)(1-\varphi) \hat{r} -\hat{g}+\tau+(\hat{g}+\pi)(1-\theta)(1-\delta)\frac{\hat{\rho}(\hat{r})-(1-\varphi) \hat{r}}{\hat{\rho}(\hat{r})+(1-\varphi)\pi+\delta}.
\end{equation}
\normalsize

\end{document}

It is causing pdflatex to crash, but if compiles fine if I change

Code: Select all

\renewcommand{\theequation}{\theequation}

to

Code: Select all

\renewcommand{\theequation}

,

but that prevents the equations that come after it from being numbered. Simple case of not knowing how to use the command, I think.

[Stefan Kottwitz]

Code: Select all

\renewcommand{\theequation}{\theequation}

It is causing pdflatex to crash

Yes, that's a recursive definition. A valid example would be

Code: Select all

\renewcommand{\theequation}{\arabic{equation}}

Stefan

[StarKid]

How do I get the equation numbering to resume the normal pattern?

[Stefan Kottwitz]

There are various ways.

• The redefinition I gave above changes the equation numbering back to arabic numbers in braces. Just try.
• Limit the effect of your own definition by braces or \begingroup ... \endgroup, or an environment. Afterwards, the original definition is valid again.
• Save the original definition in a macro by using \let or \LetLtxMacro from the letltxmacro package, and restore it later in the same way.
• Don't redefine the equation presentation. Instead, use the \tag command of the amsmath package:

  Code: Select all

  \begin{equation}\tag{2''}
  ...
  \end{equation}

Stefan