End-to-end encryption and privacy controls.
Message and call for free* around the world.
Group conversations made simple.
Say it with stickers, voice, GIFs and more.
Reach your customers from anywhere.
https://123deta.com/document/zgg36l7z-チュトリアル有限要素計算における全体剛性行列の作成法疎行列デタ構造の視点から永井学志橋本一輝はじめに.html