# The fixdif Package

The fixdif package provides an interface for defining the style of differential operators.

The basic commands are:

• \d: for differential operator "d" in math mode and under-dot accent in text;
• \partial: a "fixed" partial differential operator command;
• \letdif: an interface for defining new commands for differential operators;
• \mathdif: a commmand in math mode, you can use it just like \mathop, etc.

See fixdif.pdf for more. Happy ing!

This work may be distributed and/or modified under the conditions of the Project Public License, either version 1.3c of this license or (at your option) any later version.

Copyright (C) 2022-2023 by Zhang Tingxuan <alphaztx@163.com>.