The inverse of this "block matrices cut" is also interesting.
On Wed, Nov 19, 2014 at 2:27 PM, Roger Hui <rogerhui.can...@gmail.com>
wrote:
> ('';1) <;.1 i.3 3
> ┌─┬─┬─┐
> │0│1│2│
> │3│4│5│
> │6│7│8│
> └─┴─┴─┘
>
>
> On Wed, Nov 19, 2014 at 2:05 PM, Henry Rich <henryhr...@nc.rr.com> wrote:
>
>> boxcols i. 3 3
>> +-+-+-+
>> |0|1|2|
>> |3|4|5|
>> |6|7|8|
>> +-+-+-+
>>
>> Can you write boxcols?
>>
>> Can you write it tacitly without using a hook, fork, compose, or appose?
>>
>> Henry Rich
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>
>
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