Lowercase c in blackboard bold with doubled strokes, used in mathematical notation and for fancy outlined text.
U+1D553MATHEMATICAL DOUBLE-STRUCK SMALL BU+1D555MATHEMATICAL DOUBLE-STRUCK SMALL DU+1D552MATHEMATICAL DOUBLE-STRUCK SMALL AU+1D556MATHEMATICAL DOUBLE-STRUCK SMALL EU+1D557MATHEMATICAL DOUBLE-STRUCK SMALL FU+1D550MATHEMATICAL DOUBLE-STRUCK CAPITAL YU+1D558MATHEMATICAL DOUBLE-STRUCK SMALL GU+1D54FMATHEMATICAL DOUBLE-STRUCK CAPITAL XU+1D559MATHEMATICAL DOUBLE-STRUCK SMALL HU+1D54EMATHEMATICAL DOUBLE-STRUCK CAPITAL WU+1D55AMATHEMATICAL DOUBLE-STRUCK SMALL IU+1D54DMATHEMATICAL DOUBLE-STRUCK CAPITAL V997 characters in the Mathematical Alphanumeric Symbols Unicode block, from number 317.
U+1D554MATHEMATICAL DOUBLE-STRUCK SMALL CU+1D555MATHEMATICAL DOUBLE-STRUCK SMALL DU+1D556MATHEMATICAL DOUBLE-STRUCK SMALL EU+1D557MATHEMATICAL DOUBLE-STRUCK SMALL FU+1D558MATHEMATICAL DOUBLE-STRUCK SMALL GU+1D559MATHEMATICAL DOUBLE-STRUCK SMALL HU+1D55AMATHEMATICAL DOUBLE-STRUCK SMALL IU+1D55BMATHEMATICAL DOUBLE-STRUCK SMALL JU+1D55CMATHEMATICAL DOUBLE-STRUCK SMALL KU+1D55DMATHEMATICAL DOUBLE-STRUCK SMALL LU+1D55EMATHEMATICAL DOUBLE-STRUCK SMALL MU+1D55FMATHEMATICAL DOUBLE-STRUCK SMALL NU+1D560MATHEMATICAL DOUBLE-STRUCK SMALL OU+1D561MATHEMATICAL DOUBLE-STRUCK SMALL PU+1D562MATHEMATICAL DOUBLE-STRUCK SMALL QU+1D563MATHEMATICAL DOUBLE-STRUCK SMALL RU+1D564MATHEMATICAL DOUBLE-STRUCK SMALL SU+1D565MATHEMATICAL DOUBLE-STRUCK SMALL TU+1D566MATHEMATICAL DOUBLE-STRUCK SMALL UU+1D567MATHEMATICAL DOUBLE-STRUCK SMALL VU+1D568MATHEMATICAL DOUBLE-STRUCK SMALL WU+1D569MATHEMATICAL DOUBLE-STRUCK SMALL XU+1D56AMATHEMATICAL DOUBLE-STRUCK SMALL YU+1D56BMATHEMATICAL DOUBLE-STRUCK SMALL ZU+1D56CMATHEMATICAL BOLD FRAKTUR CAPITAL AU+1D56DMATHEMATICAL BOLD FRAKTUR CAPITAL BU+1D56EMATHEMATICAL BOLD FRAKTUR CAPITAL CU+1D56FMATHEMATICAL BOLD FRAKTUR CAPITAL DU+1D570MATHEMATICAL BOLD FRAKTUR CAPITAL EU+1D571MATHEMATICAL BOLD FRAKTUR CAPITAL FU+1D572MATHEMATICAL BOLD FRAKTUR CAPITAL GU+1D573MATHEMATICAL BOLD FRAKTUR CAPITAL HU+1D574MATHEMATICAL BOLD FRAKTUR CAPITAL IU+1D575MATHEMATICAL BOLD FRAKTUR CAPITAL JU+1D576MATHEMATICAL BOLD FRAKTUR CAPITAL KU+1D577MATHEMATICAL BOLD FRAKTUR CAPITAL LU+1D578MATHEMATICAL BOLD FRAKTUR CAPITAL MU+1D579MATHEMATICAL BOLD FRAKTUR CAPITAL NU+1D57AMATHEMATICAL BOLD FRAKTUR CAPITAL OU+1D57BMATHEMATICAL BOLD FRAKTUR CAPITAL PU+1D57CMATHEMATICAL BOLD FRAKTUR CAPITAL QU+1D57DMATHEMATICAL BOLD FRAKTUR CAPITAL RU+1D57EMATHEMATICAL BOLD FRAKTUR CAPITAL SU+1D57FMATHEMATICAL BOLD FRAKTUR CAPITAL TU+1D580MATHEMATICAL BOLD FRAKTUR CAPITAL UU+1D581MATHEMATICAL BOLD FRAKTUR CAPITAL VU+1D582MATHEMATICAL BOLD FRAKTUR CAPITAL WU+1D583MATHEMATICAL BOLD FRAKTUR CAPITAL XU+1D584MATHEMATICAL BOLD FRAKTUR CAPITAL YU+1D585MATHEMATICAL BOLD FRAKTUR CAPITAL ZU+1D586MATHEMATICAL BOLD FRAKTUR SMALL AU+1D587MATHEMATICAL BOLD FRAKTUR SMALL BU+1D588MATHEMATICAL BOLD FRAKTUR SMALL CU+1D589MATHEMATICAL BOLD FRAKTUR SMALL DU+1D58AMATHEMATICAL BOLD FRAKTUR SMALL EU+1D58BMATHEMATICAL BOLD FRAKTUR SMALL FU+1D58CMATHEMATICAL BOLD FRAKTUR SMALL GU+1D58DMATHEMATICAL BOLD FRAKTUR SMALL HU+1D58EMATHEMATICAL BOLD FRAKTUR SMALL IU+1D58FMATHEMATICAL BOLD FRAKTUR SMALL JU+1D590MATHEMATICAL BOLD FRAKTUR SMALL KU+1D591MATHEMATICAL BOLD FRAKTUR SMALL LU+1D592MATHEMATICAL BOLD FRAKTUR SMALL MU+1D593MATHEMATICAL BOLD FRAKTUR SMALL NU+1D594MATHEMATICAL BOLD FRAKTUR SMALL OU+1D595MATHEMATICAL BOLD FRAKTUR SMALL PU+1D596MATHEMATICAL BOLD FRAKTUR SMALL QU+1D597MATHEMATICAL BOLD FRAKTUR SMALL RU+1D598MATHEMATICAL BOLD FRAKTUR SMALL SU+1D599MATHEMATICAL BOLD FRAKTUR SMALL TU+1D59AMATHEMATICAL BOLD FRAKTUR SMALL UU+1D59BMATHEMATICAL BOLD FRAKTUR SMALL VU+1D59CMATHEMATICAL BOLD FRAKTUR SMALL WU+1D59DMATHEMATICAL BOLD FRAKTUR SMALL XU+1D59EMATHEMATICAL BOLD FRAKTUR SMALL YU+1D59FMATHEMATICAL BOLD FRAKTUR SMALL ZU+1D5A0MATHEMATICAL SANS-SERIF CAPITAL AU+1D5A1MATHEMATICAL SANS-SERIF CAPITAL BU+1D5A2MATHEMATICAL SANS-SERIF CAPITAL CU+1D5A3MATHEMATICAL SANS-SERIF CAPITAL DU+1D5A4MATHEMATICAL SANS-SERIF CAPITAL EU+1D5A5MATHEMATICAL SANS-SERIF CAPITAL FU+1D5A6MATHEMATICAL SANS-SERIF CAPITAL GU+1D5A7MATHEMATICAL SANS-SERIF CAPITAL HU+1D5A8MATHEMATICAL SANS-SERIF CAPITAL IU+1D5A9MATHEMATICAL SANS-SERIF CAPITAL JU+1D5AAMATHEMATICAL SANS-SERIF CAPITAL KU+1D5ABMATHEMATICAL SANS-SERIF CAPITAL LU+1D5ACMATHEMATICAL SANS-SERIF CAPITAL MU+1D5ADMATHEMATICAL SANS-SERIF CAPITAL NU+1D5AEMATHEMATICAL SANS-SERIF CAPITAL OU+1D5AFMATHEMATICAL SANS-SERIF CAPITAL PU+1D5B0MATHEMATICAL SANS-SERIF CAPITAL QU+1D5B1MATHEMATICAL SANS-SERIF CAPITAL RU+1D5B2MATHEMATICAL SANS-SERIF CAPITAL SU+1D5B3MATHEMATICAL SANS-SERIF CAPITAL TU+1D5B4MATHEMATICAL SANS-SERIF CAPITAL UU+1D5B5MATHEMATICAL SANS-SERIF CAPITAL VU+1D5B6MATHEMATICAL SANS-SERIF CAPITAL WU+1D5B7MATHEMATICAL SANS-SERIF CAPITAL XU+1D5B8MATHEMATICAL SANS-SERIF CAPITAL YU+1D5B9MATHEMATICAL SANS-SERIF CAPITAL ZU+1D5BAMATHEMATICAL SANS-SERIF SMALL AU+1D5BBMATHEMATICAL SANS-SERIF SMALL BU+1D5BCMATHEMATICAL SANS-SERIF SMALL CU+1D5BDMATHEMATICAL SANS-SERIF SMALL DU+1D5BEMATHEMATICAL SANS-SERIF SMALL EU+1D5BFMATHEMATICAL SANS-SERIF SMALL FU+1D5C0MATHEMATICAL SANS-SERIF SMALL GU+1D5C1MATHEMATICAL SANS-SERIF SMALL HU+1D5C2MATHEMATICAL SANS-SERIF SMALL IU+1D5C3MATHEMATICAL SANS-SERIF SMALL JU+1D5C4MATHEMATICAL SANS-SERIF SMALL KU+1D5C5MATHEMATICAL SANS-SERIF SMALL LU+1D5C6MATHEMATICAL SANS-SERIF SMALL MU+1D5C7MATHEMATICAL SANS-SERIF SMALL NU+1D5C8MATHEMATICAL SANS-SERIF SMALL OU+1D5C9MATHEMATICAL SANS-SERIF SMALL PU+1D5CAMATHEMATICAL SANS-SERIF SMALL QU+1D5CBMATHEMATICAL SANS-SERIF SMALL RU+1D5CCMATHEMATICAL SANS-SERIF SMALL SU+1D5CDMATHEMATICAL SANS-SERIF SMALL TU+1D5CEMATHEMATICAL SANS-SERIF SMALL UU+1D5CFMATHEMATICAL SANS-SERIF SMALL VU+1D5D0MATHEMATICAL SANS-SERIF SMALL WU+1D5D1MATHEMATICAL SANS-SERIF SMALL XU+1D5D2MATHEMATICAL SANS-SERIF SMALL YU+1D5D3MATHEMATICAL SANS-SERIF SMALL ZU+1D5D4MATHEMATICAL SANS-SERIF BOLD CAPITAL AU+1D5D5MATHEMATICAL SANS-SERIF BOLD CAPITAL BU+1D5D6MATHEMATICAL SANS-SERIF BOLD CAPITAL CU+1D5D7MATHEMATICAL SANS-SERIF BOLD CAPITAL DU+1D5D8MATHEMATICAL SANS-SERIF BOLD CAPITAL EU+1D5D9MATHEMATICAL SANS-SERIF BOLD CAPITAL FU+1D5DAMATHEMATICAL SANS-SERIF BOLD CAPITAL GU+1D5DBMATHEMATICAL SANS-SERIF BOLD CAPITAL HU+1D5DCMATHEMATICAL SANS-SERIF BOLD CAPITAL IU+1D5DDMATHEMATICAL SANS-SERIF BOLD CAPITAL JU+1D5DEMATHEMATICAL SANS-SERIF BOLD CAPITAL KU+1D5DFMATHEMATICAL SANS-SERIF BOLD CAPITAL LU+1D5E0MATHEMATICAL SANS-SERIF BOLD CAPITAL MU+1D5E1MATHEMATICAL SANS-SERIF BOLD CAPITAL NU+1D5E2MATHEMATICAL SANS-SERIF BOLD CAPITAL OU+1D5E3MATHEMATICAL SANS-SERIF BOLD CAPITAL PU+1D5E4MATHEMATICAL SANS-SERIF BOLD CAPITAL QU+1D5E5MATHEMATICAL SANS-SERIF BOLD CAPITAL RU+1D5E6MATHEMATICAL SANS-SERIF BOLD CAPITAL SU+1D5E7MATHEMATICAL SANS-SERIF BOLD CAPITAL TU+1D5E8MATHEMATICAL SANS-SERIF BOLD CAPITAL UU+1D5E9MATHEMATICAL SANS-SERIF BOLD CAPITAL VU+1D5EAMATHEMATICAL SANS-SERIF BOLD CAPITAL WU+1D5EBMATHEMATICAL SANS-SERIF BOLD CAPITAL XU+1D5ECMATHEMATICAL SANS-SERIF BOLD CAPITAL YU+1D5EDMATHEMATICAL SANS-SERIF BOLD CAPITAL ZU+1D5EEMATHEMATICAL SANS-SERIF BOLD SMALL AU+1D5EFMATHEMATICAL SANS-SERIF BOLD SMALL BU+1D5F0MATHEMATICAL SANS-SERIF BOLD SMALL CU+1D5F1MATHEMATICAL SANS-SERIF BOLD SMALL DU+1D5F2MATHEMATICAL SANS-SERIF BOLD SMALL EU+1D5F3MATHEMATICAL SANS-SERIF BOLD SMALL FU+1D5F4MATHEMATICAL SANS-SERIF BOLD SMALL GU+1D5F5MATHEMATICAL SANS-SERIF BOLD SMALL HU+1D5F6MATHEMATICAL SANS-SERIF BOLD SMALL IU+1D5F7MATHEMATICAL SANS-SERIF BOLD SMALL JU+1D5F8MATHEMATICAL SANS-SERIF BOLD SMALL KU+1D5F9MATHEMATICAL SANS-SERIF BOLD SMALL LU+1D5FAMATHEMATICAL SANS-SERIF BOLD SMALL MU+1D5FBMATHEMATICAL SANS-SERIF BOLD SMALL NU+1D5FCMATHEMATICAL SANS-SERIF BOLD SMALL OU+1D5FDMATHEMATICAL SANS-SERIF BOLD SMALL PU+1D5FEMATHEMATICAL SANS-SERIF BOLD SMALL QU+1D5FFMATHEMATICAL SANS-SERIF BOLD SMALL RU+1D600MATHEMATICAL SANS-SERIF BOLD SMALL SU+1D601MATHEMATICAL SANS-SERIF BOLD SMALL TU+1D602MATHEMATICAL SANS-SERIF BOLD SMALL UU+1D603MATHEMATICAL SANS-SERIF BOLD SMALL VU+1D604MATHEMATICAL SANS-SERIF BOLD SMALL WU+1D605MATHEMATICAL SANS-SERIF BOLD SMALL XU+1D606MATHEMATICAL SANS-SERIF BOLD SMALL YU+1D607MATHEMATICAL SANS-SERIF BOLD SMALL ZU+1D608MATHEMATICAL SANS-SERIF ITALIC CAPITAL AU+1D609MATHEMATICAL SANS-SERIF ITALIC CAPITAL BU+1D60AMATHEMATICAL SANS-SERIF ITALIC CAPITAL CU+1D60BMATHEMATICAL SANS-SERIF ITALIC CAPITAL DU+1D60CMATHEMATICAL SANS-SERIF ITALIC CAPITAL EU+1D60DMATHEMATICAL SANS-SERIF ITALIC CAPITAL FU+1D60EMATHEMATICAL SANS-SERIF ITALIC CAPITAL GU+1D60FMATHEMATICAL SANS-SERIF ITALIC CAPITAL HU+1D610MATHEMATICAL SANS-SERIF ITALIC CAPITAL IU+1D611MATHEMATICAL SANS-SERIF ITALIC CAPITAL JU+1D612MATHEMATICAL SANS-SERIF ITALIC CAPITAL KU+1D613MATHEMATICAL SANS-SERIF ITALIC CAPITAL LU+1D614MATHEMATICAL SANS-SERIF ITALIC CAPITAL MU+1D615MATHEMATICAL SANS-SERIF ITALIC CAPITAL NU+1D616MATHEMATICAL SANS-SERIF ITALIC CAPITAL OU+1D617MATHEMATICAL SANS-SERIF ITALIC CAPITAL PU+1D618MATHEMATICAL SANS-SERIF ITALIC CAPITAL QU+1D619MATHEMATICAL SANS-SERIF ITALIC CAPITAL RU+1D61AMATHEMATICAL SANS-SERIF ITALIC CAPITAL SU+1D61BMATHEMATICAL SANS-SERIF ITALIC CAPITAL T…and 481 more characters.