Hacek ˇ hairsp   half ½ hamilt ℋ hardcy ъ HARDcy Ъ harr ↔ hArr ⇔ harrcir ⥈ harrw ↭ Hat ^ hbar ℏ hcirc ĥ Hcirc Ĥ hearts ♥ heartsuit ♥ hellip … hercon ⊹ hfr 𝔥 Hfr ℌ HilbertSpace ℋ hksearow ⤥ hkswarow ⤦ hoarr ⇿ homtht ∻ hookleftarrow ↩ hookrightarrow ↪ hopf 𝕙 Hopf ℍ horbar ― HorizontalLine ─ hscr 𝒽 Hscr ℋ hslash ℏ hstrok ħ Hstrok Ħ HumpDownHump ≎ HumpEqual ≏ hybull ⁃ hyphen ‐