# Is a multilayer perceptron a recursive function?

I read somewhere that a multilayer perceptron is a recursive function in its forward propagation phase. I am not sure, what is the recursive part? For me, I would see an MLP as a chained function. So, it would nice anyone could relate an MLP to a recursive function.

• Are you sure the source was not referring to "recurrent neural networks"? Without having a link to the specific resource, it's difficult to answer this question, although both of the interpretations below look plausible to me.
– nbro
Jan 21 at 0:15

$$o_n = f(o_{n-1})$$
Where $o_n$ is the output of layer $n$.