Mathematical Bold Script Capital S 𝓢

Visual Description: In plain terms, this bold script S is a stylized letter with a flowing, script-like form. It reads as a single character yet carries a sense of special status. It stands out on calculators, screens, and printed notes, guiding the reader to treat it as a notable symbol rather than a normal variable.

Meaning & Usage: In math, this glyph marks objects with a special role, such as a distinguished space, a particular set, or a function that merits emphasis. It serves to separate these items from ordinary letters. Users often insert it via a font picker, a Unicode input, or a handwriting panel, especially in quick UI cases.

Historical Background: Across mathematical typography, symbolic alphabets were created to signal different kinds of objects. Bold script styles arose to distinguish special roles from ordinary variables. The goal was clarity in dense formulas. Modern practices standardize the glyph in character sets so software can render it consistently across platforms.

Practical Use: In formula editors, calculators, and quick comparisons, you may see this S used to mark a highlighted object. Users can switch fonts or toggle a bold script mode to emphasize a term in a line. It helps separate notation in crowded layouts and speeds recognition during calculations and reviews.

See our category page for related symbols.

Look‑alikes: S (U+53).

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