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→Infinitesimal: Archimedes had used the idea to calculate the area under a parabola, and since the 17th century, mathematicians like Fermat, Euler, [[Newton], and Leibniz based the
===Infinitesimal===
===Infinitesimal===
Inherent in the concept of infinity is the concept of infinitesimal: infinity small. [[Bernhard Riemann]] identified the sum of infinitesimal strips of area under a function to establish a rigorous definition of the integral, now known as the [[Riemann Integral]].
Inherent in the concept of infinity is the concept of infinitesimal: infinity small. [[Archimedes]] had used the idea to calculate the area under a parabola, and since the 17th century, mathematicians like [[Fermat]], [[Euler]], [[Newton], and [[Leibniz]] based their calculations of integrals and differentials on them. Only with the reformulation of calculus by [[Riemann]], [[Cauchy]], and others, they fell into disuse.
=== Infinity and economics ===
=== Infinity and economics ===
The opposite of infinity is [[scarcity]], which is the focus of [[economics]].
The opposite of infinity is [[scarcity]], which is the focus of [[economics]].