Mathlean · Online math workspace
Bell number calculator
Count partitions of a finite labeled set into nonempty blocks.
How to use this calculator
Replace 5; a five-element set has 52 set partitions.
Tap the math below to edit it and see the result. Once a result is ready, press Tab on a hardware keyboard to accept it. Outside a matrix, Return completes the line; the phone math keyboard has the same Return action.
Try it here
Interactive tools require JavaScript. You can read the guide and example without it.
What to know
Set partitions differ from integer partitions and from ordered arrangements of blocks.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.