List of letters used in mathematics, science, and engineering explained

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.

Latin

See main article: Latin letters used in mathematics, science, and engineering.

Greek

See 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
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
$\backslash hbar$	Reduced Planck constant
Ø	Empty set
\int	Integral

Modified Greek

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

Notes and References

1. Satou . Nobuo . 2017-03-23 . AN ENHANCEMENT OF THE ZAGIER CONJECTURE(Dissertation_全文) . Kyoto University Research Information Repository. 10.14989/doctor.k20155 .
2. Li-Bland . David . 2015 . The stack of higher internal categories and stacks of iterated spans . math.SG . 1506.08870.
3. Mukai . Shigeru . 11 January 1999 . Moduli of abelian surfaces and regular polyhedral groups . Moduli of Algebraic Varieties . 5–7 . https://archive.org/details/mukai-1999 . 18 April 2023.
4. Book: Namikawa, Yukihiko . https://link.springer.com/chapter/10.1007/BFb0091053 . Toroidal Compactification of Siegel Spaces . Main problem and main results . Lecture Notes in Mathematics . Springer . 1980 . 812 . 7–11. 10.1007/BFb0091053 . 9783540381761 .