Continuous vs Discrete Variables - Mathematics Stack Exchange Both discrete and continuous variables generally do have changing values—and a discrete variable can vary continuously with time I am quite aware that discrete variables are those values that you can count while continuous variables are those that you can measure such as weight or height
Continuous group actions - Mathematics Stack Exchange I was recently going through General Topology by N Bourbaki, and found the following definition of topological groups acting continuously on topological spaces (slightly rephrased) : A topological
Is every projection continuous? - Mathematics Stack Exchange This means that the product topology is the smallest topology on the product space that contains all the inverse images of open sets with respect to some projection $\pi_\omega$ Therefore, in this topology, the projections $\pi_\omega$ are rendered continuous by construction