Special Symbols

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The Greek Alphabet (with Variants)
  symbol unicode decimal value
english name uppercase lowercase uppercase lowercase
alpha Α α 0913 0945
beta Β β, ϐ 0914 0946, 0976
gamma Γ γ 0915 0947
delta Δ, ∆ δ 0916, 8710 0948
epsilon Ε ε, ϵ 0917 0949, 1013
zeta Ζ ζ 0918 0950
eta Η η 0919 0951
theta Θ, ϴ θ, ϑ 0920, 1012 0952, 0977
iota Ι ι 0921 0953
kappa Κ κ, ϰ 0922 0954, 1008
lambda Λ λ 0923 0955
mu Μ μ, µ 0924 0956, 0181
nu Ν ν 0925 0957
xi Ξ ξ 0926 0958
omicron Ο ο 0927 0959
pi Π π, ϖ 0928 0960, 0982
rho Ρ ρ, ϱ 0929 0961, 1009
sigma Σ, ∑ σ, ς* 0931, 8721 0963, 0962*
tau Τ τ 0932 0964
upsilon Υ, ϒ υ 0933, 0978 0965
phi Φ φ, ϕ 0934 0966, 0981
chi Χ χ 0935 0967
psi Ψ ψ 0936 0968
omega Ω ω 0937 0969
*  There are two variants of lowercase sigma. The second is used only at the end of Greek words and never as a symbol by itself.

 

Mathematics
symbol unicode name
+ 0043 plus, add, positive
− 8722 minus, subtract, negative
± 0177 plus and minus, uncertainty, error
· 0183 multiplication, dot product
× 0215 multiplication, cross product
÷, /, ∕ 0247, 0047, 8725 division sign; division slash, solidus
= 0061 equals
≈ 8776 approximately equal
∝ 8733 proportional
~ 0127 on the order of, tilde
< 0060 less than
> 0062 greater than
≤ 8804 less than or equal to
≥ 8805 greater than or equal to
…, ⋯, ⋮ 8230, 8943, 8942 and so on, ellipsis
∴ 8756 therefore
î 0238 unit x vector, i hat, i with circumflex
ĵ 0309 unit y vector, j hat, j with circumflex
  n/a unit z vector, k hat, k with circumflex
ℵ 8501 alef, transfinite number
∂ 8706 partial differential
Δ, ∆ 0916, 8710 increment, change
∇ 8711 del, nabla
Σ, ∑ 0931, 8721 summation, sigma
√, ⎷ 8730, 9143 square root
∛ 8731 cube root
∞ 8734 infinity
∥ 8741 parallel
⊥ 8869 perpendicular, up tack
∫ 8747 integral
∬ 8748 double integral
∭ 8749 triple integral
∮ 8750 contour integral
∯ 8751 surface integral
∰ 8752 volume integral
 
Variables, Constants, Units
symbol unicode name
ℰ 8496 efficiency, emf, script capital e
ƒ 0402 frequency, friction, function, long f, f with hook
ℐ 8464 impulse, script capital i
ℓ 8467 length, script small l
ℎ 8462 planck's constant
ℏ, ħ 8463, 0295 planck's constant over two pi, h bar, h with stroke
° 0176 degree
℃ 8451 degree celsius
℉ 8457 degree fahrenheit
K 8490 kelvin
Ω 8486 ohm
℧ 8487 inverse ohm, mho
Å 8491 ångstrom, capital a with ring above
 
Astronomy
symbol unicode name
☉ 9737 sun
☿ 9791 mercury
♀ 9792 venus
♁ 9793 earth
☾, ☽ 9790, 9789 moon
♂ 9794 mars
♃ 9795 jupiter
♄ 9796 saturn
♅,  9797, no code uranus
♆ 9798 neptune
♇,  9799, no code pluto
♈ 9800 aries
♉ 9801 taurus
♊ 9802 gemini
♋ 9803 cancer
♌ 9804 leo
♍ 9805 virgo
♎ 9806 libra
♏ 9807 scorpius
♐ 9808 sagittarius
♑ 9809 capricorn
♒ 9810 aquarius
♓ 9811 pisces
 
Music
symbol unicode name
♭ 9837 flat, semitone lower
♮ 9838 natural, no semitone adjustment
♯ 9839 sharp, semitone higher
 
Plastics (Resin Identification Codes)
symbol unicode name
♳ 9843 polyethylene terephthalate (PET or PETE)
♴ 9844 high density polyethylene (HDPE)
♵ 9845 polyvinyl chloride (PVC or V)
♶ 9846 low density polyethylene (LDPE)
♷ 9847 polypropylene (PP)
♸ 9848 polystyrene (PS)
♹ 9849 other (O)
 

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