Announcements for Mathbb-one
Mathbb-one – Blackboard-bold 1 for amssymb’s \mathbb, as a vector font
amssymb’s \mathbb
has no digits, so \mathbb{1} (the indicator function)
prints a stray symbol.
Loading mathbb-one makes \mathbb{1} and \Bbbone
print the 1
from Gilles F. Robert’s
bbm fonts,
the closest match to the Computer Modern style of
\mathbb, shipped as Type 1 outlines instead
of METAFONT bitmaps. Nothing else changes.
Works with pdfLaTeX, LuaLaTeX and XeLaTeX;
under unicode-math
it steps aside.
An OpenType bbone.otf is included for
unicode-math users
who prefer this glyph.
| Package | Mathbb-one |
| Version | 1.0 2026-11-04 |
| Copyright | 2026 Thomas Beck |
| Maintainer | Thomas Beck |
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