INTEGRAL

About this character

U+222B, the integral sign, is a mathematical symbol representing integration in calculus, denoting the area under a curve or accumulation of a quantity. Conceived by Gottfried Wilhelm Leibniz in 1675, its elongated 's' shape derives from the Latin *summa*, signifying summation. Today, it appears centrally in academic typesetting via LaTeX's `\int` command and in Unicode text. Beyond pure mathematics, the symbol is used in engineering, physics, and statistical notation. In programming, it may appear in documentation or domain-specific languages, while in design and typography, it serves as an instantly recognizable icon for mathematics, often rendered with elegant serifs or modern minimalist strokes in display fonts.

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