U+298F "⦏" Left Square Bracket with Tick in Bottom Corner Unicode Character

U+298F "⦏" Left Square Bracket with Tick in Bottom Corner is a typographic symbol used primarily in mathematical and technical notation to denote a specialized bracket function or to indicate a specific boundary condition in set theory or formal language description. Its design features a standard left square bracket with a small inward-facing tick attached to the lower end of the vertical stroke, which helps distinguish it from ordinary brackets and clarifies its role in nested expressions or alongside its rightward counterpart U+298E. This character belongs to the Miscellaneous Mathematical Symbols-B block and is encoded for use in precise textual representations where such a visual distinction is necessary.