 Mathematics of infinitesimals

The mathematics of infinitesimals is an area of calculus and mathematical analysis that involves the study of quantities that are exceedingly small, often approaching zero but not necessarily reaching it. Infinitesimals provide a framework for dealing with concepts such as limits, derivatives, and integrals in a rigorous way. The usage of infinitesimals can be traced back to the work of mathematicians like John Wallis and Isaac Newton in the 17th century.