Symbols And Letters Used In Mathematics Pdf

Greek letters are used in mathematics, science, engineering, and other areas where mathematical notation is used as symbols for constants, special functions, and also conventionally for variables representing certain quantities. In these contexts, the capital letters and the small letters represent distinct and unrelated entities. Those Greek letters which have the same form as Latin letters are rarely used: capital A, B, E, Z, H, I, K, M, N, O, P, T, Y, X. Small ι, ο and υ are also rarely used, since they closely resemble the Latin letters i, o and u. Sometimes font variants of Greek letters are used as distinct symbols in mathematics, in particular for ε/ϵ and π/ϖ. The archaic letter digamma (Ϝ/ϝ/ϛ) is sometimes used.

The Bayer designation naming scheme for stars typically uses the first Greek letter, α, for the brightest star in each constellation, and runs through the alphabet before switching to Latin letters.

In mathematical finance, the Greeks are the variables denoted by Greek letters used to describe the risk of certain investments.

Typography [edit]

The Greek letter forms used in mathematics are often different from those used in Greek-language text: they are designed to be used in isolation, not connected to other letters, and some use variant forms which are not normally used in current Greek typography.

The OpenType font format has the feature tag 'mgrk' "Mathematical Greek" to identify a glyph as representing a Greek letter to be used in mathematical (as opposed to Greek language) contexts.

The table below shows a comparison of Greek letters rendered in TeX and HTML. The font used in the TeX rendering is an italic style. This is in line with the convention that variables should be italicized. As Greek letters are more often than not used as variables in mathematical formulas, a Greek letter appearing similar to the TeX rendering is more likely to be encountered in works involving mathematics.

Greek letters
Name	TeX	HTML		Name	TeX	HTML		Name	TeX	HTML		Name	TeX	HTML		Name	TeX	HTML
Alpha	${\displaystyle \mathrm {A} \,\alpha }$	Α α		Digamma	${\displaystyle \mathrm {\Digamma} \,\digamma }$	Ϝ ϝ		Kappa	${\displaystyle \mathrm {K} \,\kappa \,\varkappa }$	Κ κ ϰ		Omicron	${\displaystyle \mathrm {O} \,\mathrm {o} }$	Ο ο		Upsilon	${\displaystyle \Upsilon \,\upsilon }$	Υ υ
Beta	${\displaystyle \mathrm {B} \,\beta }$	Β β		Zeta	${\displaystyle \mathrm {Z} \,\zeta }$	Ζ ζ		Lambda	${\displaystyle \Lambda \,\lambda }$	Λ λ		Pi	${\displaystyle \Pi \,\pi \,\varpi }$	Π π ϖ		Phi	${\displaystyle \Phi \,\phi \,\varphi }$	Φ ϕ φ
Gamma	${\displaystyle \Gamma \,\gamma }$	Γ γ		Eta	${\displaystyle \mathrm {H} \,\eta }$	Η η		Mu	${\displaystyle \mathrm {M} \,\mu }$	Μ μ		Rho	${\displaystyle \mathrm {P} \,\rho \,\varrho }$	Ρ ρ ϱ		Chi	${\displaystyle \mathrm {X} \,\chi }$	Χ χ
Delta	${\displaystyle \Delta \,\delta }$	Δ δ		Theta	${\displaystyle \Theta \,\theta \,\vartheta }$	Θ θ ϑ		Nu	${\displaystyle \mathrm {N} \,\nu }$	Ν ν		Sigma	${\displaystyle \Sigma \,\sigma \,\varsigma }$	Σ σ ς		Psi	${\displaystyle \Psi \,\psi }$	Ψ ψ
Epsilon	${\displaystyle \mathrm {E} \,\epsilon \,\varepsilon }$	Ε ϵ ε		Iota	${\displaystyle \mathrm {I} \,\iota }$	Ι ι		Xi	${\displaystyle \Xi \,\xi }$	Ξ ξ		Tau	${\displaystyle \mathrm {T} \,\tau }$	Τ τ		Omega	${\displaystyle \Omega \,\omega }$	Ω ω

Concepts represented by a Greek letter [edit]

Αα (alpha) [edit]

• ${\displaystyle \alpha }$ represents:
  • the first angle in a triangle, opposite the side A
  • the statistical significance of a result
  • the false positive rate in statistics ("Type I" error)
  • the fine structure constant in physics
  • the angle of attack of an aircraft
  • an alpha particle (He²⁺)
  • angular acceleration in physics
  • the linear thermal expansion coefficient
  • the thermal diffusivity
  • In organic chemistry the α-carbon is the backbone carbon next to the carbonyl carbon, most often for amino acids
  • right ascension in astronomy
  • the brightest star in a constellation
  • Iron ferrite and numerous phases within materials science
  • the return in excess of the compensation for the risk borne in investment
  • the α-conversion in lambda calculus
  • the independence number of a graph
  • a placeholder for ordinal numbers in mathematical logic

Ββ (beta) [edit]

• Β represents the beta function
• ${\displaystyle \beta }$ represents:
  • the thermodynamic beta, equal to (k _B T)⁻¹, where k _B is Boltzmann's constant and T is the absolute temperature.
  • the second angle in a triangle, opposite the side B
  • the standardized regression coefficient for predictor or independent variables in linear regression (unstandardized regression coefficients are represented with the lower-case Latin b, but are often called "betas" as well)
  • the ratio of collector current to base current in a bipolar junction transistor (BJT) in electronics (current gain)
  • the false negative rate in statistics ("Type II" error)
  • the beta coefficient, the non-diversifiable risk, of an asset in mathematical finance
  • the sideslip angle of an airplane
  • a beta particle (e⁻ or e⁺)
  • the beta brain wave in brain or cognitive sciences
  • ecliptic latitude in astronomy
  • The ratio of plasma pressure to magnetic pressure in plasma physics
  • β-reduction in lambda calculus
  • The ratio of the velocity of an object to the speed of light as used in the Lorentz factor

Γγ (gamma) [edit]

• Γ represents:
  • the circulation in fluid dynamics
  • the reflection coefficient of a transmission or telecommunication line.
  • the confinement factor of an optical mode in a waveguide
  • the gamma function, a generalization of the factorial
  • the upper incomplete gamma function
  • the modular group, the group of fractional linear transformations
  • the gamma distribution, a continuous probability distribution defined using the gamma function
  • second-order sensitivity to price in mathematical finance
  • the Christoffel symbols of the second kind
  • the stack alphabet in the formal definition of a pushdown automaton , or the tape-alphabet in the formal definition of a Turing machine
• ${\displaystyle \gamma }$ represents:
  • the specific weight of substances
  • the lower incomplete gamma function
  • the third angle in a triangle, opposite the side C
  • the Euler–Mascheroni constant in mathematics
  • gamma rays and the photon
  • the heat capacity ratio in thermodynamics
  • the Lorentz factor in special relativity
  • the Feferman–Schütte ordinal Γ₀

Δδ (delta) [edit]

• Δ represents:
  • a finite difference
  • a difference operator
  • a symmetric difference
  • the Laplace operator
  • the angle that subtends the arc of a circular curve in surveying
  • the maximum degree of any vertex in a given graph
  • sensitivity to price in mathematical finance
  • the discriminant in the quadratic formula which determines the nature of the roots
• ${\displaystyle \delta }$ represents:
  • percent error
  • a variation in the calculus of variations
  • the Kronecker delta function
  • the Feigenbaum constants
  • the force of interest in mathematical finance
  • the Dirac delta function
  • the receptor which enkephalins have the highest affinity for in pharmacology^[1]
  • the Skorokhod integral in Malliavin calculus, a subfield of stochastic analysis
  • the minimum degree of any vertex in a given graph
  • a partial charge. δ− represents a negative partial charge, and δ+ represents a positive partial charge chemistry (See also: Solvation)
  • the Chemical shift of an atomic nucleus in NMR spectroscopy. For protons, this is relative to tetramethylsilane = 0.
  • stable isotope compositions
  • declination in astronomy
  • noncentrality measure in statistics^[2]
  • The transition function in the formal definition of a finite automaton, pushdown automaton, or Turing machine
• Not to be confused with ∂ which is based on the Latin letter d but often called a "script delta."

Εε (epsilon) [edit]

• ${\displaystyle \epsilon }$ represents:
  • a small positive quantity; see limit
  • a random error in regression analysis
  • the absolute value of an error^[3]
  • in set theory, the limit ordinal of the sequence ${\displaystyle \omega ,\omega ^{\omega },\omega ^{\omega ^{\omega }},\dots }$
  • in computer science, the empty string
  • the Levi-Civita symbol
  • in electromagnetics, dielectric permittivity
  • emissivity
  • strain in continuum mechanics
  • permittivity
  • the Earth's axial tilt in astronomy
  • elasticity in economics
  • electromotive force
  • in chemistry, the molar extinction coefficient of a chromophore
  • in mathematics, a surreal number that is bigger than zero, but smaller than all the non-negative numbers.
• set membership symbol ∈ is based on ε

Ϝϝ (digamma) [edit]

• Ϝ is sometimes used to represent the digamma function, though the Latin letter F (which is nearly identical) is usually substituted.
• A hypothetical particle Ϝ speculated to be implicated in the 750 GeV diphoton excess, now known to be simply a statistical anomaly

Ζζ (zeta) [edit]

• ${\displaystyle \zeta }$ represents:
  • the Riemann zeta function and other zeta functions in mathematics
  • the damping ratio

Ηη (eta) [edit]

• Η represents:
  • the Eta function of Ludwig Boltzmann's H-theorem ("Eta" theorem), in statistical mechanics
  • Information theoretic (Shannon) entropy
• ${\displaystyle \eta }$ represents:
  • the intrinsic wave impedance of a medium (e.g. the impedance of free space)
  • the partial regression coefficient in statistics
  • the eta meson
  • viscosity
  • energy conversion efficiency
  • efficiency (physics)
  • the Minkowski metric tensor in relativity
  • η-conversion in lambda calculus
  • A right angle, i.e., π/2, as a follow-up to the tau/pi argument^[4]

Θθ (theta) [edit]

• Θ (uppercase) represents:
  • an asymptotically tight bound related to big O notation.
  • sensitivity to the passage of time in mathematical finance
  • in set theory, a certain ordinal number
• ${\displaystyle \theta }$ (lowercase) represents:
  • a plane angle in geometry
  • the angle to the x axis in the xy-plane in spherical or cylindrical coordinates (mathematics)
  • the angle to the z axis in spherical coordinates (physics)
  • the potential temperature in thermodynamics
  • theta functions
  • the angle of a scattered photon during a Compton scattering interaction
  • the angular displacement of a particle rotating about an axis
  • the Watterson estimator in population genetics
• ϑ ("script theta"), the cursive form of theta, often used in handwriting, represents
  • the first Chebyshev function in number theory

Ιι (iota) [edit]

• ${\displaystyle \iota }$ represents:
  • an inclusion map in set theory
  • the index generator function in APL (in the form ⍳)
  • the imaginary number equal to square root of −1

Κκ (kappa) [edit]

Λλ (lambda) [edit]

• Λ represents:
  • the Lebesgue constant (interpolation), a bound for the interpolation error
  • the von Mangoldt function in number theory
  • the set of logical axioms in the axiomatic method of logical deduction in first-order logic
  • the cosmological constant
  • the lambda baryon
  • a diagonal matrix of eigenvalues in linear algebra
  • a lattice
  • molar conductivity in electrochemistry
• ${\displaystyle \lambda }$ represents:
  • one wavelength of electromagnetic radiation
  • the decay constant in radioactivity
  • function expressions in the lambda calculus
  • a general eigenvalue in linear algebra
  • the expected number of occurrences in a Poisson distribution in probability
  • the arrival rate in queueing theory
  • the failure rate in reliability engineering
  • the Lagrange multiplier in mathematical optimization, known as the shadow price in economics
  • the Lebesgue measure denotes the volume or measure of a Lebesgue measurable set
  • longitude in geodesy
  • linear density
  • ecliptic longitude in astronomy
  • the Liouville function in number theory
  • the Carmichael function in number theory
  • the empty string in formal grammar
  • a formal system in mathematical logic
  • thermal conductivity
  • the Lorentz transformation

Μμ (mu) [edit]

• ${\displaystyle \mu }$ represents:
  • the Möbius function in number theory
  • the population mean or expected value in probability and statistics
  • a measure in measure theory
  • micro-, an SI prefix denoting 10⁻⁶ (one millionth)
  • the coefficient of friction in physics
  • the service rate in queueing theory
  • the dynamic viscosity in physics
  • magnetic permeability in electromagnetics
  • a muon
  • reduced mass
  • the ion mobility in plasma physics
  • the Standard gravitational parameter in celestial mechanics
  • a micron or micrometer (10⁻⁶ meter) (common usage in biology, though officially revoked in 1967)
  • population mean in statistics
  • chemical potential in thermodynamics

Νν (nu) [edit]

• ${\displaystyle \nu }$ represents:
  • frequency in physics in hertz (Hz)
  • Poisson's ratio in material science
  • a neutrino
  • kinematic viscosity of liquids
  • stoichiometric coefficient in chemistry
  • true anomaly in celestial mechanics
  • the matching number of a graph

Ξξ (xi) [edit]

• Ξ represents:
  • the original Riemann Xi function, i.e. Riemann's lower case ξ, as denoted by Edmund Landau and currently
  • the xi baryon
• ${\displaystyle \xi }$ represents:
  • the original Riemann Xi function
  • the modified definition of Riemann xi function, as denoted by Edmund Landau and currently

Οο (omicron) [edit]

• Ο represents:
  • big O notation (historically (1894) an uppercase Latin O)
• ${\displaystyle \mathrm {o} }$ represents:
  • small o notation (historically (1909) a lowercase Latin o)

Ππ (pi) [edit]

Ρρ (rho) [edit]

• Ρ represents:
  • one of the Gegenbauer functions in analytic number theory (may be replaced by the capital form of the Latin letter P).
• ${\displaystyle \rho }$ represents:
  • one of the Gegenbauer functions in analytic number theory.
  • the Dickman-de Bruijn function
  • the radius in a polar, cylindrical, or spherical coordinate system
  • the correlation coefficient in statistics
  • the sensitivity to interest rate in mathematical finance
  • density (mass or charge per unit volume; may be replaced by the capital form of the Latin letter D)
  • resistivity
  • the shape and reshape operators in APL (in the form ⍴)
  • the rename operator in relational algebra

Σσς (sigma) [edit]

• Σ represents:
  • the summation operator
  • the covariance matrix
  • the set of terminal symbols in a formal grammar
• ${\displaystyle \sigma }$ represents:
  • Stefan–Boltzmann constant in blackbody radiation
  • the divisor function in number theory
  • the real part of the complex variable s = σ + i t in analytic number theory
  • the sign of a permutation in the theory of finite groups
  • the population standard deviation, a measure of spread in probability and statistics
  • a type of covalent bond in chemistry (sigma bond)
  • the selection operator in relational algebra
  • stress in mechanics
  • electrical conductivity
  • area density
  • nuclear cross section
  • surface charge density for microparticles
  • standard deviation of a random variable in statistics

Ττ (tau) [edit]

• ${\displaystyle \tau }$ represents:
  • torque, the net rotational force in mechanics
  • the elementary tau lepton in particle physics
  • a mean lifetime, of an exponential decay or spontaneous emission process
  • the time constant of any device, such as an RC circuit
  • proper time in relativity
  • one turn: the constant ratio of a circle's circumference to its radius, with value 2π (6.283...).^[7]
  • Kendall tau rank correlation coefficient, a measure of rank correlation in statistics
  • Ramanujan's tau function in number theory
  • shear stress in continuum mechanics
  • a type variable in type theories, such as the simply typed lambda calculus
  • path tortuosity in reservoir engineering
  • in topology, a given topology
  • the tau in biochemistry, a protein associated to microtubules
  • the number of divisors of highly composite numbers (sequence A000005 in the OEIS)
  • precision (τ²), the reciprocal of variance, in statistics

ϒυ (upsilon) [edit]

• ϒ (U+03D2) represents:
  • the upsilon meson

Φφ (phi) [edit]

• Φ represents:
  • the work function in physics; the energy required by a photon to remove an electron from the surface of a metal
  • magnetic flux or electric flux
  • the cumulative distribution function of the normal distribution in statistics
  • phenyl functional group
  • the reciprocal of the golden ratio (represented by φ, below), also represented as 1/φ
  • the value of the integration of information in a system (based on integrated information theory)
  • Geopotential

Note: A symbol for the empty set, ${\displaystyle \varnothing }$ , resembles Φ but is not Φ.

• ${\displaystyle \phi }$ represents:
  • the golden ratio 1.618... in mathematics, art, and architecture
  • Euler's totient function in number theory
  • the argument of a complex number in mathematics
  • the value of a plane angle in physics and mathematics
  • the angle to the z axis in spherical coordinates (mathematics)
  • epoch or phase difference between two waves or vectors
  • the angle to the x axis in the xy-plane in spherical or cylindrical coordinates (physics)
  • latitude in geodesy
  • radiant flux
  • electric potential
  • the probability density function of the normal distribution in statistics
  • the Veblen functions

Χχ (chi) [edit]

Ψψ (psi) [edit]

• Ψ represents:
  • water potential
  • a quaternary combinator in combinatory logic
  • a symbol for psychology
• ${\displaystyle \psi }$ represents:
  • the wave function in the Schrödinger equation of quantum mechanics
  • the stream function in fluid dynamics
  • the reciprocal Fibonacci constant
  • the second Chebyshev function in number theory
  • the polygamma function in mathematics
  • the supergolden ratio^[8]

Ωω (omega) [edit]

• Ω represents:
  • the SI unit measure of electrical resistance, the ohm
  • the right ascension of the ascending node (RAAN) or Longitude of the ascending node in astronomy and orbital mechanics
  • the omega constant 0.5671432904097838729999686622...
  • an asymptotic lower bound notation related to big O notation
  • in probability theory and statistical mechanics, the support
  • a solid angle
  • the omega baryon
  • the arithmetic function counting a number's prime factors counted with multiplicity
  • the density parameter in cosmology
  • the first uncountable ordinal (also written as ω₁)
• ${\displaystyle \omega }$ represents:

See also [edit]

• Blackboard bold letters used in mathematics
• English pronunciation of Greek letters
• Latin letters used in mathematics
• List of letters used in mathematics and science
• List of mathematical symbols
• Mathematical Alphanumeric Symbols (a Unicode block)
• Typographical conventions in mathematical formulae

References [edit]

1. ^ ^{a b} Katzung & Trevor's Pharmacology Examination & Board Review (9th Edition.). Anthony J. Trevor, Bertram G. Katzung, Susan B. Masters ISBN 978-0-07-170155-6. B. Opioid Peptides + 268 pp.
2. ^ Applied Linear Statistical Models (5th ed.). Michael H. Kutner, Christopher J. Nachtsheim, John Neter, & William Li. New York: McGraw-Hill, 2005. ISBN 0-07-310874-X. xxviii + 1396 pp.
3. ^ Golub, Gene; Charles F. Van Loan (1996). Matrix Computations – Third Edition. Baltimore: The Johns Hopkins University Press. p. 53. ISBN0-8018-5413-X.
4. ^ Pi, Tau and Eta. David Butler, Making Your Own Sense (blog). https://blogs.adelaide.edu.au/maths-learning/2011/06/08/pi-tau-and-eta/
5. ^ Pomega – from Eric Weisstein's World of Physics
6. ^ Outline for Weeks 14&15, Astronomy 225 Spring 2008 Archived 2010-06-15 at the Wayback Machine
7. ^ "Tau Day – No, really, pi is wrong: The Tau Manifesto by Michael Hartl". 2010. Retrieved 2015-03-20 .
8. ^ "A supergolden rectangle"

External links [edit]

• A pronunciation guide with audio
• Greek alphabet letters onclick copy paste

Symbols And Letters Used In Mathematics Pdf

Source: https://en.wikipedia.org/wiki/Greek_letters_used_in_mathematics,_science,_and_engineering

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