[LyX/master] * Math.lyx from Koji

[Pavel Sanda]

commit 0a8cf8cf52f6f7774565f954ca4564e9b90ebf76
Author: Pavel Sanda <sanda at lyx.org>
Date:   Thu Jan 26 00:58:29 2023 +0100

    * Math.lyx from Koji

 lib/doc/ja/Math.lyx | 9643 +++++++++++++++++++++++++++++++++++++++++++--------
 1 files changed, 8215 insertions(+), 1428 deletions(-)