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Timeline for Weakened Binary Walls

Current License: CC BY-SA 3.0

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Aug 1, 2017 at 2:58 comment added miles @Zacharý The inverses are used to undo the operations used before sorting each row. It's true that the inverse of transpose is just transpose, but another way to see this is as <convert from binary> <transpose> <sort each row> <transpose> <convert to binary> M, where the first two functions are just the inverses of the last two.
Jul 30, 2017 at 15:32 comment added Adalynn There's that binary left-padding again, +1. And also, can you explain why you would need to use the inverse of transpose, since it is just transpose?
Jul 29, 2017 at 22:27 history answered miles CC BY-SA 3.0