Mathematical Bold Fraktur Small S 𝖘

Visual Description: A small stylized letter s rendered in a bold Fraktur style. The strokes are thick with angular edges and sharp contrasts. The character wears a heavy, decorative look that stands out from plain fonts. It resembles an ornate script used in math typography.

Meaning & Usage: In math notation, this stylized s marks a variable or quantity with a distinct typographic identity. It is not tied to a single value. Writers use it to separate types of objects, such as special families or functions, from ordinary letters. It adds emphasis without changing meaning.

Historical Background: This form belongs to the family of bold Fraktur and other blackletter styles used in print and learning materials. In typography, such variants were created to distinguish categories of letters. Over time, mathematicians adopted decorative styles to encode nuance and to cue readers about different roles of symbols.

Practical Use: In formulas and calculators, you may see stylized letters as part of variable names or labels. Digital tools offer font switches and symbol palettes to insert bold Fraktur letters. Quick UI controls let you apply style choices while performing operations or making comparisons in a formula.

See our category page for related symbols.

Look‑alikes: s (U+73).

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