U+222B "∫" Integral Unicode Character

U+222B "∫" Integral is a mathematical symbol originating from the late 17th century, introduced by Gottfried Wilhelm Leibniz to denote the operation of integration in calculus. It represents the sum of infinitely many infinitesimal quantities, often interpreted as the area under a curve in a graph, and is fundamental to many fields of science, engineering, and mathematics. In digital text, this character allows the precise representation of integration notation without relying on images or specialized formatting, making it an essential part of the Mathematical Operators block in Unicode.