ID Compat Math Continue

ID Compat Math Continue is a character property that identifies characters allowed to continue a mathematical identifier under compatibility normalization rules, meaning they can appear after the first character in a math variable name even if their standard form differs from their compatibility decomposed form. It includes letters, digits, and specific symbols like subscripts, superscripts, or exotic script variants that map to simpler equivalents, ensuring that identifiers like 𝑥₁ (with a subscript) remain valid after normalization. This property supports consistent parsing and processing of mathematical notation across software, particularly in contexts where Unicode normalization is applied, by preserving the intended continuity of math identifiers despite visual or encoding variations. It excludes characters that start identifiers and focuses solely on continuation to avoid ambiguity.