Roger Cotes (1682-1716) was an English mathematician and astronomer known for his work in calculus and his contributions to the field of mathematics. He is best remembered for his role in editing and completing the second edition of Isaac Newton's "Principia Mathematica," which laid the groundwork for classical mechanics. Cotes also made significant advancements in the study of series and convergence. Cotes was a professor at Cambridge University, where he influenced many students and scholars. His most notable work, "Harmonia Mensurarum," focused on the relationship between geometry and algebra. Despite his early death at the age of 34, Cotes left a lasting impact on mathematics and is often regarded as a pioneer in the field.