Mathematical Bold Fraktur Small B 𝖇

Visual Description: The character appears as a bold Fraktur small b with heavy, angular strokes and decorative curves. It resembles a traditional blackletter letter built with sharp edges and fluid diagonals. In a math font it stands out from plain Latin letters, yet remains compact enough for inline formulas. It looks formal and distinctive.

Meaning & Usage: This glyph signals a specific kind of object in notation. It is used to mark certain sets, functions, or variables that deserve special emphasis. In formulas and tables, it helps distinguish a named entity from ordinary variables. In user interfaces, it may indicate a selectable, stylized option for analysis.

Historical Background: Fraktur was a traditional calligraphic style in print and early typesetting. Mathematical alphanumeric symbols were later standardized to include bold Fraktur variants for math notation. The aim was to provide alternative, visually distinct letters without creating new symbols. The idea is to separate categories by look, not by value.

Practical Use: In documents and calculators, you may see bold Fraktur letters used to label special objects or steps. Many editors offer a font switch or a Unicode input to insert U plus 1D587. Users can build quick UI controls for operations or comparisons by showing these styled letters beside numbers, formulas, or results to emphasize distinction.

See our category page for related symbols.

Look‑alikes: b (U+62).

Need styled alternatives? Try the Fancy Text tool.