U+2A4F "⩏" Double Square Union Unicode Character

U+2A4F "⩏" Double Square Union is a mathematical symbol used primarily in set theory and formal logic to represent a union operation applied in a double or iterated fashion, often signaling the logical union of a pair of collections or a specific type of generalized binary union. Its design visually combines two square-like shapes conjoined at the base, distinguishing it from the standard single square union symbol and indicating a nuanced operation in advanced algebra or lattice theory. This character belongs to the Supplemental Mathematical Operators block, allowing it to serve specialized notation in academic texts where precise differentiation between union variants is required.