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Theoretical question deal with topics that do not generally have immediate practical uses. Please be careful when using this tag: your question may be more appropriate for the Computer Science Stack Exchange site.

29 votes
7 answers
17k views

How can lossless compression ever exist?

If all data is essentially just a bit string, then all data can be represented as a number. Because a compression algorithm, c(x), must reduce or keep the same length of the input, then the compressed …
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