Mathlean · Online math workspace
Dedekind eta function calculator
Evaluate the modular Dedekind eta function in the upper half-plane.
How to use this calculator
Edit DedekindEta(i) using a parameter with positive imaginary part.
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
This is not the real Dirichlet eta function. Modular transformations carry phase factors.
Mathlean combines visual mathematical input with computation and canvas tools. Results depend on the expression and available engine support; check important answers independently.