About MATHEMATICAL BOLD ITALIC PARTIAL DIFFERENTIAL
Mathematical Bold Italic Partial Differential (U+1D74F) is a Unicode math symbol from the Mathematical Alphanumeric Symbols block. It resides on Plane 1 (SMP, Supplementary Multilingual Plane), has bidirectional class ON (other neutrals), is mirrored, and has combining class 0 (Not Reordered). In HTML it can be written as 𝝏 or 𝝏. Because it is outside the Basic Multilingual Plane, proper font support is required; otherwise a fallback box may be shown.