Mathematical Bold Italic Capital Z 𝒁

Visual Description: The character appears as a Z with bold strokes and a slanted, italic posture. It looks heavier than plain text and has a smooth, continuous line. The overall shape remains clearly Z, but the weight and angle imply emphasis. It evokes emphasis in mathematical notation.

Meaning & Usage: It marks a stylized variable or symbol in math text. It is not the standard symbol for the integers; that is another Z. In formulas, it helps distinguish a specific object from ordinary letters. In digital math, writers choose bold italic to show emphasis or vector-like roles.

Historical Background: The style emerged from typographic conventions and the expansion of Unicode. Mathematics libraries and fonts added mathematical alphabets to help distinguish objects. This allowed clear rendering on screens and print. Over time, designers adopted these forms to support varied notation and international use.

Practical Use: In formulas and calculators, you may see this symbol used to label a particular object or to denote a styled variable in calculations. User interfaces often provide quick controls to insert such symbols, switch styles, or compare values, helping readability and rapid operation.

See our category page for related symbols.

Look‑alikes: Z (U+5A).

Need styled alternatives? Try the Fancy Text tool.