U+29BE "⦾" Circled White Bullet Unicode Character

U+29BE "⦾" Circled White Bullet is a typographic symbol depicting an empty or hollow circle set within a larger circular border, designed to be visually distinct from a standard filled bullet point. Classified in the Miscellaneous Mathematical Symbols-B block, it is often used in mathematical notation, diagrams, and logic contexts to denote a null set, an empty operation, or a placeholder in set theory and mapping functions. Its open, unfilled appearance allows it to serve as a clear counterpoint to the solid black circle (U+29BF) in systems requiring binary or contrastive visual markers, such as in flowcharts or Venn diagrams.