DOOR_Tyrrell Rockafellar_An Overview of Variational Analysis_1/5_Origins and Motivations

[@nathansudermann-merx4586]

Legendary. Thank you so much for uploading the video.

[@ryanislip6863]

Amazing video

[@DinkanFollower]

A circle centred at origin is closed convex, how can it be equivalent to a collection of half spaces?

[@ks-jh6kd]

It is, you can represent the circle as an intersection of uncountably many halfspaces