Heavy bold serif lowercase m, used for fancy bold text in bios and usernames, and for bold vectors in math.
U+1D425MATHEMATICAL BOLD SMALL LU+1D427MATHEMATICAL BOLD SMALL NU+1D424MATHEMATICAL BOLD SMALL KU+1D428MATHEMATICAL BOLD SMALL OU+1D423MATHEMATICAL BOLD SMALL JU+1D429MATHEMATICAL BOLD SMALL PU+1D422MATHEMATICAL BOLD SMALL IU+1D42AMATHEMATICAL BOLD SMALL QU+1D421MATHEMATICAL BOLD SMALL HU+1D42BMATHEMATICAL BOLD SMALL RU+1D420MATHEMATICAL BOLD SMALL GU+1D42CMATHEMATICAL BOLD SMALL S997 characters in the Mathematical Alphanumeric Symbols Unicode block.
U+1D400MATHEMATICAL BOLD CAPITAL AU+1D401MATHEMATICAL BOLD CAPITAL BU+1D402MATHEMATICAL BOLD CAPITAL CU+1D403MATHEMATICAL BOLD CAPITAL DU+1D404MATHEMATICAL BOLD CAPITAL EU+1D405MATHEMATICAL BOLD CAPITAL FU+1D406MATHEMATICAL BOLD CAPITAL GU+1D407MATHEMATICAL BOLD CAPITAL HU+1D408MATHEMATICAL BOLD CAPITAL IU+1D409MATHEMATICAL BOLD CAPITAL JU+1D40AMATHEMATICAL BOLD CAPITAL KU+1D40BMATHEMATICAL BOLD CAPITAL LU+1D40CMATHEMATICAL BOLD CAPITAL MU+1D40DMATHEMATICAL BOLD CAPITAL NU+1D40EMATHEMATICAL BOLD CAPITAL OU+1D40FMATHEMATICAL BOLD CAPITAL PU+1D410MATHEMATICAL BOLD CAPITAL QU+1D411MATHEMATICAL BOLD CAPITAL RU+1D412MATHEMATICAL BOLD CAPITAL SU+1D413MATHEMATICAL BOLD CAPITAL TU+1D414MATHEMATICAL BOLD CAPITAL UU+1D415MATHEMATICAL BOLD CAPITAL VU+1D416MATHEMATICAL BOLD CAPITAL WU+1D417MATHEMATICAL BOLD CAPITAL XU+1D418MATHEMATICAL BOLD CAPITAL YU+1D419MATHEMATICAL BOLD CAPITAL ZU+1D41AMATHEMATICAL BOLD SMALL AU+1D41BMATHEMATICAL BOLD SMALL BU+1D41CMATHEMATICAL BOLD SMALL CU+1D41DMATHEMATICAL 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YU+1D4CFMATHEMATICAL SCRIPT SMALL ZU+1D4D0MATHEMATICAL BOLD SCRIPT CAPITAL AU+1D4D1MATHEMATICAL BOLD SCRIPT CAPITAL BU+1D4D2MATHEMATICAL BOLD SCRIPT CAPITAL CU+1D4D3MATHEMATICAL BOLD SCRIPT CAPITAL D…and 797 more characters.