ABSTRACT
There are many occasions that we model the input x k at the discrete instance k ∈ N $ k \in {\mathbb{N}} $ https://s3-euw1-ap-pe-df-pch-content-public-p.s3.eu-west-1.amazonaws.com/9781315172309/e112b15c-ee8b-4102-9c2c-0d5caba3f84a/content/inline-math6_1.tif"/> and the output y k at instance k with a linear relation
