I use the symbol "\mathbbm{1}" to produce a nice-looking "1" digit. But, then my PDF contains a "Type-3" font, which is not allowed by my publisher.
Is there a replacement that does not use a type-3 font?
[Tex/LaTex] A replacement to “\mathbbm{1}” with type-1 fonts
fontssymbols
Related Solutions
The default definition of \textcopyright in latex.ltx is
\DeclareTextCommandDefault{\textcopyright}{\textcircled{c}}
where \textcircled is
\DeclareTextAccentDefault{\textcircled}{OMS}
This means that \textcircled is taken, by default, from an OMS encoded font, provided it is defined. The standard font provides a substitution for \OMS/cmr/<series>/<shape>, precisely \OMS/cmsy/<series>/<shape>. You can find the substitution rules in the file omscmr.fd.
The newtxtext doesn't have a suitable omsntxrx.fd file, so there's a warning about the font substitution performed by default; LaTeX's rules say that when an OMS encoded font is requested and not available for the current font attributes, the one defined for the math symbols is used (with warning).
However, the textcomp package loads the definitions for TS1 encoded fonts and there a “real” copyright symbol is present. The newtxtext package has support for TS1, so not only
\usepackage{textcomp}
avoids the warning, but provides a better glyph.
Without textcomp
With textcomp
You can use the otftotfm software to convert .ttf fonts to the necessary TeX font files.
Best Answer
The doublestroke package provides blackboard fonts in type 1 format, including the
\mathds{1}that you are looking for.It does not exactly look like those of
bbm, but could likely be used as a drop in replacement in your case