Mathematical Bold Script Small S 𝓼

Visual Description: This symbol is a lowercase s drawn in a bold script style. It features graceful, flowing curves and a thick, single stroke. The letter appears handwritten yet remains clear at small sizes. It sits apart from plain letters, adding elegance while preserving readability in math notation.

Meaning & Usage: In math, this bold script s often signals a special object rather than a plain variable. It can denote a particular space, a family of sets, or a function with a distinguished role. It helps readers distinguish semantics without cluttering equations with extra symbols.

Historical Background: This style belongs to a broad family of mathematical alphanumeric symbols used to encode different appearances in print and digital text. Over time, designers and writers adopted script variants to convey emphasis and semantics. The result is a toolkit that readers recognize for specialized meanings in formulas.

Practical Use: In writing and teaching, you may apply this style to highlight a term in a formula. On calculators or math editors, you can switch fonts or apply a script preset via a quick UI control. This helps with comparisons, grouping terms, and clarifying relationships in complex equations.

See our category page for related symbols.

Look‑alikes: s (U+73).

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