Correspondences (set-valued functions, multi-valued functions): definitions, properties, and examples. The second part of this lecture is on hemicontinuous correspondences: • Correspondences
Oh Gosh, I can't believe that I come across this video created by the inventor of the ->-> notation! And I can't believe it has only a few thousand of views so far, making me feel like unearthing a treasure trove. Thank you so much for your lucid explanation to these exotic concepts, way better than my professor does.
