Pascal wrote:
> no crash though j802 win64

Brian Schott wrote [offline]:
> I do not get a crash.
>   JVERSION
> Engine: j803/2014-10-19-11:11:11
> Library: 8.04.13
> Platform: Darwin 64

Hmm, I should have been more thoughtful and careful about my bug report. I
got it in J8-64 on OSX. I don't have J8 installed on my Windows machine,
here, but I get no crash, and exactly your 16, in both J6 and J7 on
Windows (both 64 bit), and I believe the J library in 7 is the same as in
8.

When I get back to the office, I'll check the specific version of J I'm
running there.

RE Boss wrote:
> Perhaps you are not aware of The Book of Numbers by
> Conway & Guy, where on page 60 Knuth's arrow notation was described:
> 
> But if you think this notation produces large numbers, try the 
> author's "chained arrow notation"

I'm aware of the book but I haven't read it; I am familiar with chained
arrow notation. Even bigger than chained arrow notation is the number
TREE(3), which is so ineffably large that humans have been literally
unable to invent a notation to express it.  Seriously.

> I could send you a few pages if you wish.

That would be very nice, thank you!

Pepe wrote:
> Check out the message:
> http://www.jsoftware.com/pipermail/programming/2015-February/041095.html
> for  one easy way to play with Knuth's up arrow notation in J.

Oh dude, that's sweet. I'm a big fan of the "hidden power" of & .

-Dan


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