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Feb 3, 2020 at 17:20 history edited Martin Sleziak CC BY-SA 4.0
minor typos
May 2, 2018 at 9:02 comment added Jeff actually, the original version is simple, as you solved it. The actual question was the one that you can see now. I am updating the question to include the answer to the reverse problem.
May 2, 2018 at 9:01 comment added R W It is not a good practice when you completely change your question without saying anything about answers to their original versions
May 2, 2018 at 8:56 history edited Jeff CC BY-SA 4.0
added mutual information instead of entropy
May 2, 2018 at 8:44 answer added R W timeline score: 2
May 2, 2018 at 7:19 comment added Jeff @MichaelHardy, you are right and that was a typo. I have corrected the question.
May 2, 2018 at 7:18 comment added Jeff @Memming the map might not be invertible in general.
May 2, 2018 at 7:16 history edited Jeff CC BY-SA 4.0
added 59 characters in body
May 1, 2018 at 18:32 history edited Michael Hardy CC BY-SA 3.0
added 8 characters in body
May 1, 2018 at 13:07 comment added Memming Trivial if you can make the map invertible? Can I choose a $c_1$ and $c_2$ such that you can decode back $X_1$ and $X_2$ from $Z$?
May 1, 2018 at 10:58 comment added Jeff yes, I have corrected the question.
May 1, 2018 at 10:58 history edited Jeff CC BY-SA 3.0
deleted 2 characters in body
May 1, 2018 at 10:10 comment added Jean Duchon You mean $Z$ instead of $RX$, don't you?
Apr 30, 2018 at 20:21 history asked Jeff CC BY-SA 3.0