
04:19:08
seeing x log so often makes me tell a result b Vitali Milman and H. Koenig about ten years ago , on Leibniz rule..apart from drrivative for real differentiable functions, the other (along with combinations) solution for general functions is f going to g given by g()=f(x) log mod f(x)….

04:22:28
sort of non-linear derivations

04:22:39
Is the chain rule in the original form true if F is channel which commutes with E and EF=F?

04:37:49
wonderful talk

04:40:00
Thanks Kun. We do make use of your results to improve private capacity of bidirectional channels (2-input, 2-output channel with two users), which also translates to bounds for class of MDI-QKD setup.

04:40:10
Do you have kind of Leibniz rule?