Lete-Sans-Math package

Description

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

Contents

• Lete-SansMath.otf OpenType Math font
• Lete-SansMath-Bold.otf Bold variant (limited coverage)
• lete-sans-math.sty LaTeX style file
• Lete-SansMath.pdf Documentation in PDF format
• Lete-SansMath.ltx LaTeX source of Lete-SansMath.pdf
• unimath-lete-sans.pdf Modified version of unimath-symbols.pdf

		showing available Lete-SansMath symbols compared
	to other sans-serif math fonts.

• unimath-lete-sans.ltx LaTeX source of unimath-sans.pdf
• README.md (this file)

Installation

This package is meant to be installed automatically by TeXLive, MikTeX, etc. Otherwise, the package can be installed under TEXMFHOME or TEXMFLOCAL, f.i. Lete-SansMath.otf in directory texmf-local/fonts/opentype/public/Lete-SansMath/ and lete-sans-math.sty in directory texmf-local/tex/latex/LatoMath/. Documentation files and their sources can go to directory texmf-local/doc/fonts/public/LeteSansMath/

Don't forget to rebuild the file database (mktexlsr or so) if you install under TEXMFLOCAL.

Finally, make the system font database aware of the LeteSansMath font (fontconfig under Linux).

License

• The font LeteSansMath.otf’ is licensed under the SIL Open Font License,

Version 1.1. This license is available with a FAQ at: http://scripts.sil.org/OFL

• The other files are distributed under the terms of the LaTeX Project

Public License from CTAN archives in directory macros/latex/base/lppl.txt. Either version 1.3c or, at your option, any later version.

Changes

• v. 0.1: first appeared on https://github.com/abccsss/LatoMath/ Author: Chenjing Bu.

• First public version: 0.36
• v. 0.37:
  • Missing Greek sans glyphs (U+1D756-U+1D7CB) added to LatoMath-Bold.
  • Glyphs U+2234 to U+223B added to LatoMath-Bold.
• v.0.40 Fonts renamed from "Lato Math" to "Lete Sans Math" due to the Reserved Font Name clause on the Lato fonts. Package "lato-math" renamed as "lete-sans-math".
• v.0.41 Added feature cv11 to provide a single-storey variant for lowercase g (upright, italic, bold, bolditalic).
• v.0.43
  • 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.
• v.0.44 Triple and quadruple stroked arrows (U+21DA, U+21DB, U+2B45, U+2B46) are extensible again.
• v.0.45 Displayed integrals and big operators are now verticaly aligned on the Math axis, this should fix Issue#13.
• v.0.50
  • 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'), (fprime) and (f^{prime}) produce the same output, see https://github.com/notofonts/math/blob/main/documentation/building-math-fonts/
• v.0.60
  • New calligraphic capitals (unmodulated script) replace the former Chancery style which are still accessible with "StylisticSet=1".
  • Former Chancery style capitals heve been slightly emboldened (issue #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 https://tex.stackexchange.com/questions/759695/
  • Math table fixes for better positionnonig subscripts of italic and calligraphic glyphs.
  • Documentation updated to cover the new features.
• v.0.61
  • Fixed variation Selectors (U-FE00 and U+FE01) (issue #20).
  • Fixed spaces width (U+2000 to U+200B and U+205F) (issue #21).

— Copyright 2024-2026 Chenjing Bu, Daniel Flipo. https://github.com/abccsss/LeteSansMath/