About MATHEMATICAL SANS-SERIF BOLD ITALIC PARTIAL DIFFERENTIAL
Mathematical Sans-serif Bold Italic Partial Differential (U+1D7C3) 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.