# Operators > Standard library math operator iterators.
## Usage ```javascript var ns = require( '@stdlib/math/iter/ops' ); ``` #### ns Standard library math operator iterators. ```javascript var iterators = ns; // returns {...} ``` The namespace contains the following functions for creating iterator protocol-compliant iterators:
- [`iterAdd( iter0, ...iterator )`][@stdlib/math/iter/ops/add]: create an iterator which performs element-wise addition of two or more iterators. - [`iterDivide( iter0, ...iterator )`][@stdlib/math/iter/ops/divide]: create an iterator which performs element-wise division of two or more iterators. - [`iterMod( iter0, ...iterator )`][@stdlib/math/iter/ops/mod]: create an iterator which performs an element-wise modulo operation of two or more iterators. - [`iterMultiply( iter0, ...iterator )`][@stdlib/math/iter/ops/multiply]: create an iterator which performs element-wise multiplication of two or more iterators. - [`iterSubtract( iter0, ...iterator )`][@stdlib/math/iter/ops/subtract]: create an iterator which performs element-wise subtraction of two or more iterators.
## Examples ```javascript var objectKeys = require( '@stdlib/utils/keys' ); var ns = require( '@stdlib/math/iter/ops' ); console.log( objectKeys( ns ) ); ```