Mathematical Bold Script Small X 𝔁

Visual Description: A small x glyph drawn in a bold script style. The letter has fluid, calligraphic strokes, with rounded terminals and slight swashes that hint at handwriting. It appears thicker than a standard italic x and reads clearly in formulas and text. In display it is compact and legible even at smaller sizes.

Meaning & Usage: It marks a variable or a distinguished quantity in equations. The bold script styling signals emphasis or a special role, such as a transformed version of x or a variable with a particular meaning in a model. In math writing, it helps distinguish variable types in formulas and notes.

Historical Background: The bold script family grew from typography used to set apart important notations in mathematical texts. As digital fonts expanded, many styles followed to give researchers and students a ready set of distinct symbols. The aim is to offer alternative appearances without changing the underlying meaning of the symbol.

Practical Use: It appears in publications, math editors, and educational software to emphasize a special variable. In formulas and on calculators, the glyph helps keep notation tidy. UI tools may offer quick controls to switch styles or compare values, making emphasis instantly visible during problems.

See our category page for related symbols.

Look‑alikes: x (U+78).

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