List of letters used in mathematics, science, and engineering

This list is about the meanings of the letters used in mathematics, science and engineering. For the Unicode block, see Mathematical Alphanumeric Symbols.

Latin and 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.

Hindu-Arabic numerals

Typographical variations of digits in Unicode

Name	Digits
Double-struck	𝟘 𝟙 𝟚 𝟛 𝟜 𝟝 𝟞 𝟟 𝟠 𝟡

Latin

Main article: Latin letters used in mathematics, science, and engineering

Greek

Main article: Greek letters used in mathematics, science, and engineering

Other scripts

Hebrew

א	Cardinality of infinite sets
ב	Cardinality of infinite sets
ג	Gimel function
ת	Tav (number)

Cyrillic

Л	Lobachevsky function[1]
Ш	Tate–Shafarevich group Dirac comb
ш	Shuffle product

Japanese

よ	Yoneda embedding[2]
サ	Satake compactification[3][4]

Modified Latin

Å	Angstrom
∀	Universal quantification
Đ	Dispersity
∂	Partial derivative
ð	Spin-weighted partial derivative
∃	Existential quantification
${\textstyle \hbar }$	Reduced Planck constant
Ø	Empty set
${\displaystyle \int }$	Integral

Modified Greek

∇	Del operator Gradient Divergence Curl
∈	Element (mathematics)
ƛ	Reduced wavelength
∐	Coproduct