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Reading egreg's answer to Decrease length of underline in math, I wanted to use the accents package for lower bars in math mode.

It seem however that the package is incompatible with the bm package. When I add \usepackage{accents} to my preamble, even without using any commands related to the package, I get error messages for all my uses of \bm.

Missing number, treated as zero ...s when only one specific $\bm{\tilde{a}}

Missing control sequence inserted ...s when only one specific $\bm{\tilde{a}}

Missing } inserted ...s when only one specific $\bm{\tilde{a}}

Missing } inserted ...s when only one specific $\bm{\tilde{a}}

Missing } inserted ...s when only one specific $\bm{\tilde{a}}

Missing } inserted ...s when only one specific $\bm{\tilde{a}}

Extra }, or forgotten \endgroup ...s when only one specific $\bm{\tilde{a}}

Missing control sequence inserted ...s when only one specific $\bm{\tilde{a}}

Parameters must be numbered consecutively ...s when only one specific $\bm{\tilde{a}}

Missing number, treated as zero ... \leq \left| \sum_{a_i \in \bm{\tilde{a}}

Missing control sequence inserted ... \leq \left| \sum_{a_i \in \bm{\tilde{a}}

Missing } inserted ... \leq \left| \sum_{a_i \in \bm{\tilde{a}}

Extra }, or forgotten \endgroup ... \leq \left| \sum_{a_i \in \bm{\tilde{a}}

Missing control sequence inserted ... \leq \left| \sum_{a_i \in \bm{\tilde{a}}

Parameters must be numbered consecutively ... \leq \left| \sum_{a_i \in \bm{\tilde{a}}

Missing number, treated as zero for any $\bm{\tilde{a}}

Missing control sequence inserted for any $\bm{\tilde{a}}

Missing } inserted for any $\bm{\tilde{a}}

Extra }, or forgotten \endgroup for any $\bm{\tilde{a}}

Missing control sequence inserted for any $\bm{\tilde{a}}

Parameters must be numbered consecutively for any $\bm{\tilde{a}}

Missing number, treated as zero ...he case in particular for $\bm{\tilde{a}}

Missing control sequence inserted ...he case in particular for $\bm{\tilde{a}}

Missing } inserted ...he case in particular for $\bm{\tilde{a}}

Extra }, or forgotten \endgroup ...he case in particular for $\bm{\tilde{a}}

Missing control sequence inserted ...he case in particular for $\bm{\tilde{a}}

Parameters must be numbered consecutively ...he case in particular for $\bm{\tilde{a}}

Is there a way to make both packages compatible?

Community
  • 1
Martin Van der Linden
  • 503

1 Answers1

6

Instead of $\bm{\tilde{a}}$, use $\tilde{\bm{a}}$.

OR

Use $\bm{{\tilde{a}}}$, an extra grouping inside \bm{{...}}.

Jagath
  • 4,287
  • Great, I tried the first solution you proposed and it works! Could you add a word of explanation about why the order or extra grouping matters? – Martin Van der Linden Jul 05 '13 at 11:11
  • I think: \bm command will expand its argument and spilt everything inside it, causing the error. The grouping here will remove the error. – Jagath Jul 05 '13 at 11:46