Mathematical Italic Capital Q 𝑄

Visual Description: The mathematical italic capital Q is a tall, slender letter used in formulas. It appears slanted to the right, like other math italics. The stroke is smooth with a curved tail on the bottom. In many fonts it keeps a distinct, formal shape. It blends with variables in editors and calculators.

Meaning & Usage: It marks a variable or a known quantity in equations. It signals a formal letter used to denote a quantity, often seen in functions, sets, or sequences. In many contexts Q is a common symbol for a quantity or a labeled element. It helps distinguish from other letters.

Historical Background: The italic style came from math traditions that set variables apart from regular text. Letters were slanted to show they are mathematical objects. In digital typesetting, this approach was carried into fonts used by editors and calculators. The idea is general and widely adopted across software and books.

Practical Use: In math work, you see Q used as a variable or a reference for a quantity. It helps keep formulas clear on screens and sheets. Calculators and editors offer quick UI controls to switch to italic form, to compare Q with other values, or to mark a result Q.

See our category page for related symbols.

Look‑alikes: Q (U+51).

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