On 02/06/2020 07:55, Florian Haftmann wrote:
>> Tobias has pointed out that directory ex is easily overlooked these days and 
>> perhaps we should rename it, e.g. to Examples. Any comments? Conceivably it 
>> could be subdivided, as it seems to have 94 entries.
> 
> I'm skeptic that there is enough related material to carve out distinct
> thematically grouped sessions.
> 
> IMHO there is one central observation: HOL-ex consists of
> a) genuine examples apt for studying
> b) rather technical matter (e.g. testings simprocs etc.) and idea sketches
> 
> a) could go to Isar examples
> b) could maybe be distributed to corresponding sessions

This proposal for a) sounds like renaming HOL-Isar_Examples to HOL-Examples,
adding a few things from HOL-ex, and maybe (re)moving a few old things from
it. (Note that historically, HOL-Isar_Examples is from a time, when almost
everything else was non-Isar --- hard to believe today.)


The proposal for b) is similar to what I suggested earlier: HOL-Library in
particular would absorbs a few more genuine examples, e.g. HOL-ex.SOS as
HOL-Library.Sum_of_Squares_Examples.

In the past that was considered a problem, because the underlying image would
become a bit slower and bigger. Now we have fewer uses of HOL-Library as
parent image, instead the few required theories are included/reloaded via
"'sessions' HOL-Library".


        Makarius

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