[理工] Entropy

[KAINTS (RUKAWA)]

1.show that,if Y=g(X),g is deterministic function,then
  H(g(X)|X)=0.

2.H(X|g(X))=0,this means the value g(X) uniquely
  determine X,or that g() is a one-to-one mapping.

 how to solve this problem?

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