| -- a binary operator, often used for horizontal concatenation

Ways to use symbol | :

Expression | Expression -- see Expression -- the class of all expressions
Expression | Holder -- see Expression -- the class of all expressions
Expression | Thing -- see Expression -- the class of all expressions
Holder | Expression -- see Expression -- the class of all expressions
Holder | Holder -- see Expression -- the class of all expressions
Thing | Expression -- see Expression -- the class of all expressions
GradedModuleMap | GradedModuleMap -- a binary operator, often used for horizontal concatenation
Iterator | Iterator (missing documentation)
Array | Array -- see List | List -- join lists, sequences or arrays
List | List -- join lists, sequences or arrays
Sequence | Sequence -- see List | List -- join lists, sequences or arrays
Matrix | Matrix -- join matrices horizontally
Matrix | Number -- see Matrix | Matrix -- join matrices horizontally
Matrix | RingElement -- see Matrix | Matrix -- join matrices horizontally
Number | Matrix -- see Matrix | Matrix -- join matrices horizontally
RingElement | Matrix -- see Matrix | Matrix -- join matrices horizontally
RingElement | RingElement -- see Matrix | Matrix -- join matrices horizontally
Net | Net -- join strings or nets
String | String -- see Net | Net -- join strings or nets
String | ZZ -- see Net | Net -- join strings or nets
ZZ | String -- see Net | Net -- join strings or nets
ZZ | ZZ -- logical or

For the programmer

The object | is a keyword.

This operator may be used as a binary operator in an expression like x|y. The user may install binary methods for handling such expressions with code such as

         X | Y := (x,y) -> ...

where X is the class of x and Y is the class of y.

| -- a binary operator, often used for horizontal concatenation

See also

Ways to use symbol | :

For the programmer