The syntax of the Wolfram Language is unique among modern languages in allowing not just ordinary ASCII characters, but also a variety of special characters that greatly increase readability and elegance, as well as correspondence with traditional mathematical notation.

Arithmetic & Functions

× \[Times] — multiplication sign, automatically added between numbers etc.

÷ \[Divide]  ▪  √ \[Sqrt]  ▪   \[Piecewise]  ▪  ⌊ \[LeftFloor]  ▪  ⌋  ▪  ⌈  ▪  ⌉

Comparisons

≠, ≤, ≥,  — automatically converted from !=, <=, >=, ==

 \[LongEqual] — alternative form equivalent to ==

Constants

∞ \[Infinity]  ▪  π \[Pi]  ▪   \[ExponentialE]  ▪   \[ImaginaryI]  ▪  ° \[Degree]

Calculus, etc.

∂ \[PartialD]  ▪  ∫ \[Integral]  ▪   \[DifferentialD]  ▪  ∑ \[Sum]  ▪  ∏ \[Product]

 \[DifferenceDelta]  ▪   \[DiscreteRatio]  ▪   \[DiscreteShift]

Vectors & Matrices

 \[Cross]  ▪   \[Transpose]  ▪   \[Conjugate]  ▪    ▪  

Logic

∧ \[And]  ▪  ∨ \[Or]  ▪  ¬ \[Not]  ▪  ⊻ \[Xor]  ▪  ⊼ \[Nand]  ▪  ⊽ \[Nor]

 \[Implies]  ▪  ⧦ \[Equivalent]

Sets, etc.

∈ \[Element]  ▪  ∋  ▪  ∉  ▪  ∀ \[ForAll]  ▪  ∃ \[Exists]

⋃ \[Union]  ▪  ⋂ \[Intersection]

 \[Distributed] — distributed according to a probability distribution

Graphs

 \[UndirectedEdge]  ▪   \[DirectedEdge]

Rules

 \[Rule] — automatically converted from ->

 \[RuleDelayed] — automatically converted from :>

Parts & Associations

...〚...〛 — part specification, entered using [[, ]]

<|…|> — association, automatically converted from <|...|>

Pure Functions

 \[Function] — pure function xbody, automatically converted from |->

Invisible Syntax »

\[InvisibleComma]  ▪  \[InvisibleTimes]  ▪  \[ImplicitPlus]

\[InvisibleApplication] — separate a function and its argument, as in f x

Operators without Built-in Meanings »

CirclePlus (⊕)  ▪  Wedge (⋀)  ▪  AngleBracket (〈〉)  ▪  ...