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BUILT-IN MATHEMATICA SYMBOL

Slot

represents the first argument supplied to a pure function.

#n
represents the

argument.

is used to represent arguments or formal parameters in pure functions of the form body& or Function[body].

represents the first argument of a pure function:

Use numbered arguments:

represents the first argument of a pure function:

Out[1]=

Use numbered arguments:

Out[1]=

is short for #1, the first argument:

stands for the whole pure function:

Programmatically create a pure function of 5 arguments:

allows function arguments to be referenced without giving them names:

Additional arguments are ignored:

stands for the sequence of all arguments:

Use explicit names to set up nested pure functions:

Use

for the inner function:

Use

for the outer function:

Using nested

notation behaves differently:

If too few arguments are provided, a message is generated:

A recursive definition for factorial using