# Akira Yoshioka

## Star product deformation of the zeta function

One parameter deformation of function is given by means of convergent star product,

where the deformation parameter varies in some domain of $\mathbb C$.

The deformed functions are called {\it star functions}.

In this presentation, we give a short survey of

star product, especially as a simple case,

a star product of functions of one variable.

We discuss a deformation of the Riemann zeta function by the star product.