There is a very clear definition of convexity, as can be seen here [1] on Wikipedia. Nothing to discuss about with regards to definition. [1] https://en.wikipe

There is a very clear definition of convexity, as can be seen here [1] on Wikipedia. Nothing to discuss about with regards to definition. [1] https://en.wikipedia.org/wiki/Convex_set https://en.wikipedia.org/wiki/Convex_set