!! used as default html header if there is none in the selected theme.
This principle is as follows. Ce principe est le suivant. For two words of the same length of a (binary) code, one define their Hamming distance by the number of bits (places) where the first word is different from the second.
If all the words of a code have a Hamming distance of at least 2k+1 from each other, then a word containing at most k erroneous bits is ``correctible'', as one can replace it by the code word nearest to it. And if the Hamming distance is at least 2k, one can correct words containing at most k-1 errors, as well as detect words containing k errors.
This exercise will therefore give you a code as well as a coded message containing errors. And you should decode this message, correcting correctible errors.The most recent version
Please take note that WIMS pages are interactively generated; they are not ordinary HTML files. They must be used interactively ONLINE. It is useless for you to gather them through a robot program.