Know : List of Letters used in Science and Mathematics

Note: This list can be expanded further.

Å — angstrom

A — ampere, area, a blood type, a spectral type, vector potential, Work

B — B meson, a blood type, boron, luminance, magnetic field, a spectral type

C — carbon, degrees Celsius, set of complex numbers, coulomb, molar heat capacity, the C programming language, specific heat capacity, Cunningham correction factor

D — deuterium, differential operator, electric displacement, D meson

E — electric field, energy, SI prefix exa–, expected value

F — degrees Fahrenheit, farad, fluorine, force, Helmholtz free energy, a spectral type

G — Einstein tensor, SI prefix giga–, Gibbs free energy, gravitational constant, Green’s function, Momentum, a Spectral type

H — auxiliary magnetic field, enthalpy, Hamiltonian, Hankel function, Heaviside step function, henry, Higgs boson, homology group, Hubble constant, hydrogen, set of quaternions, hat matrix

I — current, iodine, impulse, luminous intensity, moment of inertia

J — angular momentum, Bessel function of the first kind, current, joule

K — kaon, kelvin, potassium, sectional curvature, a spectral type

L — angular momentum, inductance, Lagrangian, litre, a spectral type

M — magnetization, mass, SI prefix mega–, a spectral type, torque

N — Avogadro’s number, Bessel function of the second kind, set of natural numbers, newton, nitrogen, normal distribution, normal vector

O — big O notation, a blood type, oxygen, a spectral type

P — Legendre polynomial, luminous flux, phosphorus, polarization, power, pressure, probability, projection

Q — electric charge, quantity of heat, set of rational numbers, flow rate

R — curvature tensor, electrical resistance, radius, set of real numbers

S — area, entropy, siemens, sphere, spin operator, sulfur, symmetric group

T — a spectral type, temperature, tesla, tritium

U — potential energy, uranium, unitary operator

V — potential energy, vanadium, volt, voltage, volume

W — energy, Lambert’s W function, tungsten, watt, W boson, Work, work function, Wiener process

X — random variable, abscissa

Y — Bessel function of the second kind, SI prefix yotta–, yttrium, ordinate, luminance

Z — atomic number, impedance, set of integers, partition function (statistical mechanics), partition function (quantum field theory), Z boson, SI prefix zetta–, altitude

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a — SI prefix atto–, acceleration, reflectance

b — Bottom quark

c — SI prefix centi–, Charm quark, speed of light, speed of sound

d — SI prefix deci–, distance, Down quark, infinitesimal increment, differential operator

e — Napier’s constant, electron, positron, electric charge

f — SI prefix femto–, frequency

g — gram, gravitational acceleration, gravitational field, distance metric of spacetime

h — height, hour, Planck’s constant, spherical Hankel function

i — imaginary complex unit, imaginary quaternion unit, unit vector, current, row index

j — electric current and current density, radiant intensity, spherical Bessel function of the first kind, unit vector, column index, imaginary complex unit, imaginary quaternion unit

k — Boltzmann constant, imaginary quaternion unit, SI prefix kilo–, wave vector, unit vector

l — length, litre, mean free path

m — magnitude, mass, SI prefix milli–, metre, minute

n — SI prefix nano–, neutron, refractive index, spherical Bessel function of the second kind

o — small o notation

p — electric dipole moment, momentum, SI prefix pico-, proton, point of a space

q — electric charge, generalized coordinate

r — position (vector), radial polar coordinate, radius

s — second, Strange quark

t — period, time, Top quark

u — Up quark

v — velocity

w — velocity

x — abscissa, real-valued argument, variable to be determined, vector,

y — ordinate, SI prefix yocto-, pixel row index

z — complex variable, altitude, SI prefix zepto-

Greek

Β — Beta function

Γ — Angular momentum, Gamma function, Christoffel symbols

Δ — A macroscopic change in the value of a variable, Laplace operator, Delta particle

Θ — Heaviside step function

Λ — Iwasawa algebra, Lorentz transformation, Lambda Hyperon

Ξ — Cascade Hyperon

Π — Product

Σ — Sum, Surface, Sigma Hyperon

Φ — Alternative symbol for Quantum mechanical wavefunction

Ψ — Quantum mechanical wavefunction

Ω — Chaitin’s constant, Ohm, Solid angle, Omega Hyperon

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α — Alpha particle, Fine structure constant, Angular acceleration

β — Beta particle, Inverse temperature

γ — Euler-Mascheroni constant, Gamma-ray (Photon), Photon, Relativistic gamma factor

δ — Dirac delta function, Infinitesimal quantity, Kronecker delta

ε — Infinitesimal quantity, Permittivity

ζ — Damping Ratio, Riemann zeta function

η — Distance metric of flat spacetime, Efficiency, Dynamic viscosity, η-meson

θ — Angle, Angular polar coordinate, Temperature

ι –

κ — Gravitational constant

λ — Half-life, Lagrangian multiplicator, Lambda expression, Thermal conductivity, Wavelength

μ — Absorption coefficient, Chemical potential, Magnetic dipole moment, Mean, SI prefix micro–, Micron, Muon, Permeability, Reduced mass

ν — Frequency, Kinematic viscosity, Neutrino

ξ — Riemann Xi function

ο –

π — Fundamental group, Conjugate momentum, Homotopy groups, Number π, Pion, Prime-counting function, Projection

ρ — Density, Electrical resistivity, Radial polar coordinate, ρ-meson

σ — Cross section, Electrical conductivity, Spin, Standard deviation, Stefan-Boltzmann constant

τ — Tau lepton, Torque, Shear stress, Time constant

υ –

φ — Angular polar coordinate, Electric potential, Euler’s totient function, Golden mean, Phase, Potential energy

χ — Electric susceptibility

ψ — Quantum mechanical wavefunction, J/ψ particle

ω — Frequency (in radian/s), angular velocity

Ш — Tate-Shafarevich group (Ш(G))

ℵ — Cardinality of infinite sets

ב — Cardinality of infinite sets

∂ — Partial derivative

∇ – Del operator, Gradient, Divergence, Curl