Useful Unicode

Math

SymbolUnicode
±00B1
ê00EA
î00EE
× (multiplication)00D7
ᵀ (transpose)1D40
ⅇ (exponential)2147
ⅈ (imaginary i)2148
∂ (partial)2202
∆ (increment)2206
∇ (dell)2207
∑ (summation)2211
221D
221E
⨯ (cross product)2A2F
≡ (congruent)2261
〈 (left bracket)2329
〉(right bracket)232A

Physics & Astronomy

⁂ (asterism)2042
ℎ (Planck constant)210E
ℏ (h-bar)210F
Å212B
ℓ (script l)2113
∿ (sine wave)2235
ẋ 1E8B
1E8D
2605
☉ (Sun)2609

Greek Letters

α03B1
β03B2
γ03B3
δ03B4
ε03B5
ϵ03F5
λ03BB
μ03BC
ρ03C1
σ03C3
τ03C4
θ03B8
φ03C6
Φ (phi symbol)03D5