Great Chart!!!! :
https://en.wikipedia.org/wiki/Mathematical_Alphanumeric_Symbols
Mathematical Alphanumeric Symbols (U+1D400–U+1D7FF)
code doesn't work, but I can copy symbol :
U+????
U+2102 ℂ
U+210D ℍ
U+1D541 𝕁
U+1D544 𝕄
U+2115 ℕ
U_2119 ℙ
U+211D ℝ
U+1D4E1 𝓡
U+1D54B 𝕋 code doesn't work, but I can copy symbol
U+2124 ℤ
U+213E ℾ
U+213C ℼ too small! (capital pi)
U+2140 ⅀