On Fri, Oct 11, 2013 at 04:08:05PM -0700, meekerdb wrote: > > Maybe I'm not clear on what UD* means. I took it to be, at a given > state of the UD, the last bit output by the 1st prog, the last bit > output by the 2nd program,...up to the last prog that the UD has > started. Right? >
Its not the output, because the UD doesn't actually output anything. Rather its an internal view of the states the machines emulated by the UD pass through, rather like what the Helsinki man experiences when being duplicated to Moscow and Washington. Its a subtle point, and I fell into the same trap you did (and Liz did also, this morning) a few years ago. I'm not sure anyone has a clear, crisp mathematical explanation of what UD* is - I certainly don't. Cheers -- ---------------------------------------------------------------------------- Prof Russell Standish Phone 0425 253119 (mobile) Principal, High Performance Coders Visiting Professor of Mathematics [email protected] University of New South Wales http://www.hpcoders.com.au ---------------------------------------------------------------------------- -- You received this message because you are subscribed to the Google Groups "Everything List" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/everything-list. For more options, visit https://groups.google.com/groups/opt_out.
