Maybe this is a clearer explanation of my question.
A=:>:i.2 2
f=: 2 2$ '+/';'|:';'|.';'-/ .*'
"."1 (>"0 f)(,"1)2 2 1$'A'
4 6
0 0
1 3
2 4
3 4
1 2
_2 0
0 0
<"2 "."1 (>"0 f)(,"1)2 2 1$'A'
┌───┬────┐
│4 6│1 3 │
│0 0│2 4 │
├───┼────┤
│3 4│_2 0│
│1 2│ 0 0│
└───┴────┘
($@"."1)(>"0 f)(,"1)2 2 1$'A'
2 0
2 2
2 2
0 0
NB.($"."1)(>"0 f)(,"1)2 2 1$'A' is a domain error
([:$"."1)(>"0 f)(,"1)2 2 1$'A'
2 2 2 2
Why, if u@v y ↔ u v y , are the two final results different?
Linda
-----Original Message-----
From: [email protected] [mailto:programming-
[email protected]] On Behalf Of Linda Alvord
Sent: Monday, April 15, 2013 4:39 AM
To: [email protected]
Subject: Re: [Jprogramming] Table of Verbs
(>"0 f)(,"1)2 2 1$'A'
+/ A
|: A
|. A
-/ .*A
(>"0 f)(,"1)2 2 1$'A'
+/ A
|: A
|. A
-/ .*A
If u@v y ↔ u v y shouldn't these two agree?
($@"."1)(>"0 <mailto:$@> f)(,"1)2 2 1$'A'
2 0
2 2
2 2
0 0
n
($"."1)(>"0 f)(,"1)2 2 1$'A'
|domain error
| ($"."1)(>"0 f)(,"1)2 2 1$'A'
This is also different.
([:$"."1)(>"0 f)(,"1)2 2 1$'A'
2 2 2 2
The padding covers up the fact that:
$+/A
2
$|:A
2 2
$|.A
2 2
$-/ .*A
The final result is empty. I can understand that dealing with the
different shapes is a problem. I'm bothered by the different results.
Linda
-----Original Message-----
From: [email protected] [mailto:programming-
[email protected]] On Behalf Of Linda Alvord
Sent: Monday, April 15, 2013 3:38 AM
To: [email protected]
Subject: Re: [Jprogramming] Table of Verbs
A=:i.2 2
<"2 "."1 (>"0 f)(,"1)2 2 1$'A'
----T----┐
│2 4│0 2 │
│0 0│1 3 │
+---+----+
│2 3│_2 0│
│0 1│ 0 0│
L---+-----
<"2 "."1 (>"0 f)(,"1)2 2 1$'B'
--------T-----┐
│9 12 15│0 3 6│
│0 0 0│1 4 7│
│0 0 0│2 5 8│
+-------+-----+
│6 7 8 │0 0 0│
│3 4 5 │0 0 0│
│0 1 2 │0 0 0│
L-------+------
This is getting closer to the answer. Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Linda Alvord
Sent: Sunday, April 14, 2013 12:15 PM
To: [email protected]
Subject: Re: [Jprogramming] Table of Verbs
You just need to exclude the extra zeros somehow.
A=:>:i.2 2
f=: 2 2$ '+/';'|:';'|.';'-/ .*'
"."1 (>"0 f)(,"1)2 2 1$'A'
4 6
0 0
1 3
2 4
3 4
1 2
_2 0
0 0
Linda
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf Of Raul Miller
Sent: Sunday, April 14, 2013 11:45 AM
To: Programming forum
Subject: Re: [Jprogramming] Table of Verbs
Paper and pencil is a powerful tool of thought. I have yet to see an
adequate replacement in any computing environment.
--
Raul
On Sun, Apr 14, 2013 at 10:41 AM, km <[email protected]> wrote:
> It would be nice if there were a simple way to transform your T into U :
>
> U =: 2 2 $ +/ ; |: ; |. ; -/ . *
> U i. 2 2
> +---+---+
> |2 4|0 2|
> | |1 3|
> +---+---+
> |2 3|_2 |
> |0 1| |
> +---+---+
> U i. 3 3
> +-------+-----+
> |9 12 15|0 3 6|
> | |1 4 7|
> | |2 5 8|
> +-------+-----+
> |6 7 8 |0 |
> |3 4 5 | |
> |0 1 2 | |
> +-------+-----+
> U
> 2 2 $ +/ ; |: ; |. ; -/ .*
>
> P.S. I probably should have said "One of Ken's handwritten notes for
Linda".
>
> --Kip
>
> Sent from my iPad
>
>
> On Apr 14, 2013, at 9:40 AM, Dan Bron <[email protected]> wrote:
>
>> I wasn't wanting any behavior; I was just answering your question.
>> Is
there something else you wanted, having read Ken's paper (i.e. some other
question than how to make a table of verbs in J)?
>>
>> -Dan
>>
>> Please excuse typos; composed on a handheld device.
>>
>> On Apr 14, 2013, at 9:00 AM, km <[email protected]> wrote:
>>
>>> Is this the behavior you want?
>>>
>>> T =: 2 2 $ +/`|:`|.`(-/ .*)
>>> T i. 2 2
>>> 2
>>> T i. 3 3
>>> 2
>>> T
>>> +-------+---------------+
>>> |+-+---+||: |
>>> ||/|+-+|| |
>>> || ||+||| |
>>> || |+-+|| |
>>> |+-+---+| |
>>> +-------+---------------+
>>> ||. |+-+-----------+|
>>> | ||.|+-------+-+||
>>> | || ||+-+---+|*|||
>>> | || |||/|+-+|| |||
>>> | || ||| ||-||| |||
>>> | || ||| |+-+|| |||
>>> | || ||+-+---+| |||
>>> | || |+-------+-+||
>>> | |+-+-----------+|
>>> +-------+---------------+
>>>
>>> --Kip
>>>
>>> Sent from my iPad
>>>
>>>
>>> On Apr 14, 2013, at 8:36 AM, Dan Bron <[email protected]> wrote:
>>>
>>>> 2 2 $ +/`|:`|.`(-/ .*)
>>>>
>>>> Please excuse typos; composed on a handheld device.
>>>>
>>>> On Apr 14, 2013, at 8:24 AM, km <[email protected]> wrote:
>>>>
>>>>> One of Ken's notes shows a "table of verbs". A two by two example
>>>>> in J might be
>>>>>
>>>>> +/ |:
>>>>>
>>>>> |. -/.*
>>>>>
>>>>> How would you implement such a table in J?
>>>>>
>>>>> --Kip Murray
>>>>>
>>>>> Sent from my iPad
>>>>>
>>>>>
>>>>> On Apr 13, 2013, at 11:53 PM, "Linda Alvord"
>>>>> <[email protected]>
wrote:
>>>>>
>>>>>> Here are some copies of notes that Ken made over the years.
>>>>>>
>>>>>>
>>>>>> http://www.jsoftware.com/jwiki/KenIversonNotes-LindaAlvord
>>>>>>
>>>>>> Linda
>>>>> ------------------------------------------------------------------
>>>>> ---- For information about J forums see
>>>>> http://www.jsoftware.com/forums.htm
>>>> -------------------------------------------------------------------
>>>> --- For information about J forums see
>>>> http://www.jsoftware.com/forums.htm
>>> --------------------------------------------------------------------
>>> -- For information about J forums see
>>> http://www.jsoftware.com/forums.htm
>> ---------------------------------------------------------------------
>> - For information about J forums see
>> http://www.jsoftware.com/forums.htm
> ----------------------------------------------------------------------
> For information about J forums see http://www.jsoftware.com/forums.htm
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