U+2A31 "⨱" Multiplication Sign with Underbar Unicode Character

U+2A31 "⨱" Multiplication Sign with Underbar is a mathematical operator classified under the Supplemental Mathematical Operators block, designed to represent multiplication with an additional horizontal bar placed beneath the standard "×" symbol. This underbar typically indicates a variant or specialized use in algebraic notation, sometimes denoting a modified multiplication operation in advanced mathematics, such as in contexts involving ordered pairs, module theory, or specific binary operations where the underbar highlights a particular algebraic structure or distinction from ordinary multiplication. Its inclusion in Unicode ensures consistent representation across digital platforms for scholarly and technical documentation.