∆ may refer to:
*
Triangle (∆), one of the basic shapes in geometry. Many different
mathematical equations
In mathematics, an equation is a formula that expresses the equality of two expressions, by connecting them with the equals sign . The word ''equation'' and its cognates in other languages may have subtly different meanings; for example, in F ...
include the use of the triangle.
*
Delta (letter)
Delta (; uppercase Δ, lowercase δ or 𝛿; el, δέλτα, ''délta'', ) is the fourth letter of the Greek alphabet. In the system of Greek numerals it has a value of 4. It was derived from the Phoenician letter dalet 𐤃. Letters that come ...
(Δ), a Greek letter also used in mathematics and computer science
*
Delta baryon (Δ), one of several
Baryons consisting of
up and
down quarks
The down quark or d quark (symbol: d) is the second-lightest of all quarks, a type of elementary particle, and a major constituent of matter. Together with the up quark, it forms the neutrons (one up quark, two down quarks) and protons (two up q ...
.
*
alt-J
Alt-J (stylised as alt-J, real name Δ) are an English indie rock band formed in 2007 in Leeds. Their lineup includes Joe Newman (guitar/lead vocals), Thom Sonny Green (drums), Gus Unger-Hamilton (keyboards/vocals), and formerly Gwilym Sainsbur ...
(Δ), a British indie band
*
Laplace operator
In mathematics, the Laplace operator or Laplacian is a differential operator given by the divergence of the gradient of a scalar function on Euclidean space. It is usually denoted by the symbols \nabla\cdot\nabla, \nabla^2 (where \nabla is the ...
(Δ), a differential operator
*
Increment operator
Increment or incremental may refer to:
* Incrementalism, a theory (also used in politics as a synonym for gradualism)
* Increment and decrement operators, the operators ++ and -- in computer programming
* Incremental computing
* Incremental backu ...
(∆)
*
Symmetric difference, in mathematics, the set of elements which are in either of two sets and not in their intersection
{{Greek Alphabet, letter=delta