DIGIT ZERO

About this character

U+0030, commonly called zero, is the numeral representing the absence of quantity and the foundational placeholder of the decimal positional system. Originating from Indian mathematics via Arabic numerals, its use as a digit enabled efficient arithmetic and algebra. In modern computing and programming, zero marks array indices, boolean falsity, and null states. Typographically, the glyph may feature a slash or dot to distinguish it from the capital letter O, a critical design consideration in code and data entry. It anchors the Basic Latin block as its first numeral, appearing in writing, mathematics, and digital interfaces worldwide as a core building block of numerical notation.

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