Leibniz developed closely analogous concepts and techniques.
莱布尼茨发展了类似的概念和技术。
2
Researchers have, however, recently discovered notes of Leibniz' that discuss one of Newton's books on mathematics.
然而，研究人员最近发现莱布尼茨的笔记中讨论了牛顿的一本数学著作。
3
Leibniz' notes are limited to early sections of Newton's book, sections that precede the ones in which Newton's calculus concepts and techniques are presented.