U+29DB "⧛" Right Double Wiggly Fence Unicode Character

U+29DB "⧛" Right Double Wiggly Fence is a typographic symbol belonging to the Miscellaneous Mathematical Symbols-B block, used primarily in mathematical notation to denote a specific type of fence or boundary that is both double and wavy in appearance. Unlike simpler vertical or angled brackets, this glyph visually suggests a rhythmic or fluctuating delimiter between two expressions, often appearing in contexts where a non-rigid or approximate separation is needed, such as in set theory or logic to represent an open interval or a statistical range with inherent variability. Its double wiggly lines echo the shape of a tilde but with a vertical orientation, reinforcing its function as a specialized punctuation for advanced academic or technical writing.