Lete Sans Math

Authors: Chenjing Bu and Daniel Flipo

Lete Sans Math is an OpenType sans-serif math font, based on the Lato font.

This repository contains the content of the LaTeX package lete-sans-math, including OpenType font files, LaTeX style files, and documentation. You can also view the package on CTAN.

Contents

• LeteSansMath.otf — The OpenType font file.
• LeteSansMath-Bold.otf — The OpenType font file for the bold variant (limited coverage).
• lete-sans-math.sty — The LaTeX style file.
• LeteSansMath.ltx — Source file for documentation of the package.
• unimath-lete.ltx — Source file for a modified version of unimath-symbols.pdf from the unicode-math package, showing available Lete Sans Math symbols compared to other sans-serif math fonts.

Usage

This package is meant to be installed automatically by TeX Live, MikTeX, etc. Use

\usepackage{lete-sans-math}

to load the package. The package requires XeLaTeX or LuaLaTeX to compile. For more information such as package options, see the documentation.

To load the package manually, place the files lete-sans-math.sty, LeteSansMath.otf, and LeteSansMath-Bold.otf in your project directory, and use the same call as above.

It is also possible to use the font without the lete-sans-math package. See the documentation for details.

License

• The font files LeteSansMath.otf and LeteSansMath-Bold.otf are licensed under the SIL Open Font License (OFL) Version 1.1.

• The other files are distributed under the terms of the LaTeX Project Public License (LPPL) Version 1.3c.

Changes

v0.61 (2026-03-22)

• Fixed variation selectors (U+FE00 and U+FE01) (#20).
• Fixed spaces width (U+2000 to U+200B and U+205F) (#21).

v0.60 (2026-03-18)

• New calligraphic capitals (unmodulated script) replace the former Chancery style which are still accessible with StylisticSet=1.
• Former Chancery style capitals have been slightly emboldened (#9).
• New StylisticSet=9 converts slanted negations into vertical ones.
• Display version added to biginterleave (U+2AFC) and bigtalloblong (U+2AFF)
• Invisible Math operators (U+2061 to U+2064) added.
• Variation Selectors (U+FE00 and U+FE01) added.
• Compatibility with Typst v0.14: all glyphs used in vertical compositions now sit on the baseline (only up and down arrows had to be fixed).
• Extensible over/under-accents and over/under-arrows resized for smoother variation.
• Math table Sub/Superscripts parameters tuned, see here.
• Math table fixes for better positioning subscripts of italic and calligraphic glyphs.
• Documentation updated to cover the new features.

v0.50 (2025-08-30)

• Fixed issue #14 (discrepancy between \usepackage and \setmathfont).
• Math table fixes for glyph horizontal/vertical composition.
• DisplayOperatorMinHeight and DelimitedSubFormulaMinHeight set to 1400 instead of 1500.
• Glyphs U+2A00 to U+2A0B vertically centered on the math axis.
• Glyphs U+2032 to U+2037 and U+2057 (prime and co.) resized so that f.i. \(f'\), \(f\prime\) and \(f^{\prime}\) produce the same output, see here.

v0.45 (2024-12-14)

• Displayed integrals and big operators are now vertically aligned on the math axis (#13).

v0.44 (2024-11-24)

• Triple and quadruple stroked arrows (U+21DA, U+21DB, U+2B45, U+2B46) are extensible again.

v0.43 (2024-11-23)

• Glyphs U+0332 and U+23DC to U+23DF resized for consistency.
• Fixed vertical composition of int symbol (U+222B).
• Glyphs U+21D0 to U+21D5, U+27F8 to U+27FA, U+27FD, and U+27FE slightly changed to be constent with the equal sign (U+003D). Horizontal composition of these arrows reworked.

v0.41 (2024-07-18)

• Added feature cv11 to provide a single-storey variant for the lowercase letter g.

v0.40 (2024-05-12)

• Rename the font as 'Lete Sans Math' due to copyright reasons.

v0.37 (2024-04-18)

• Glyphs U+2234–U+223B and sans-serif Greek letters U+1D756–U+1D7CB added to the bold variant.

v0.36 (2024-03-14)

• First public release.