## Introductory post, and the invariance problem

There are several topics I would like to talk about in the future posts, and they generally fall under the category of theoretical (or systems) neuroscience, and sometimes more broadly biological physics. The topics to be discussed include: the problem of invariance in theoretical neuroscience, Schrodinger’s take on physics of living matter and other modern thoughts on fundamental principles underlying biology (optimality principle, role of noise, etc), dynamics and computation: are they mutually exclusive concepts?, correlations (correlations in statistical physics, and the role of correlation in an ensemble of neurons), reinforcement learning, and more. I will start with the post on invariance.