Mathematical Bold Italic Capital Q 𝑸

Visual Description: The symbol is a capital Q in bold, italic styling. It has a strong stroke and a slight slant. In math it appears as a stylized variable. The bold italic form marks emphasis and helps the letter stand out in equations and diagrams. It resembles other bold italic Latin letters used for emphasis.

Meaning & Usage: It marks a key quantity in a formula. The bold italic style signals emphasis or a specific type, like a distinguished quantity. In practice you may denote Q as the target in a problem. In calculators and math editors you can apply this style to emphasize an item.

Historical Background: The use of bold and italic letters grew with modern math printing. Editors used bold for vectors and special variables. Unicode later provided a standardized family for such symbols. The idea is to help readers distinguish kinds of quantities without changing the letter itself. This is general history, not about dates or places.

Practical Use: In learning materials and software, bold italic can mark a quantity to set it apart. Use it in formulas, notes, or calculators to highlight comparisons or steps. Many formula editors offer quick UI controls to apply bold italic style or switch between normal and emphasized variants. This helps readers scan equations quickly.

See our category page for related symbols.

Look‑alikes: Q (U+51).

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