Composition of Formal Power Series (Large) Forum Problem Tutorials # 🇯🇵 (maspy) FPS 合成・逆関数の解説（2）転置原理による合成アルゴリズムの導出 | maspyのHP 🇬🇧 (maspy) FPS Composition and Compositional Inverse (Part 2) | maspyのHP