Uniform boundedness of pretangent spaces, local constancy of metric derivatives and strong right upper porosity at a point

Viktoriia Bilet, Oleksiy Dovgoshey, Mehmet Kucukaslan

Let $(X,d,p)$ be a pointed metric space. A pretangent space to $X$ at $p$ is a metric space consisting of some equivalence classes of convergent to $p$ sequences $(x_n), x_n \in X,…