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Re: how useful are collecting lists?



Thank you for the exposition, very helpful!

On 03/13/2013 09:58 PM, Alan Manuel Gloria wrote:
To help clarify this, please consider:

a b c d

===>

a
! b
! c
! d

By symmetry:

a b . d
===>
a
! b
! .
! d

And so:

a b . (x y)
===>
a
! b
! .
! (x y)

And since:

<*
x
y
*>
<==>
(
x
y
)

Then:

a b . (
x
y
)
===>
a
! b
! .
! (
x
y
)
===>
a
! b
! .
! <*
x
y
*>

Which is also equivalent to:

a b . <*
x
y
*>