4 sources healthy · latest episode 9 Nov 2026
descriptive claim

The Lean proof establishes that zlib compression followed by decompression returns the original data for any data and any compression level.

Unresolved speaker · Mathematics Just Changed Forever — Kevin Hartnett · 26 Oct 2026

In their words

The transcript segments this claim was taken from

“And then it proves that for any compression level, for any data, if you compress the data and then decompress, you get the original data back.”
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