# [Om] Multistep "equation" symbol?

Michael Kohlhase m.kohlhase at jacobs-university.de
Wed May 13 23:13:31 CEST 2009

```I think that this is indeed a good idea. So we should probably have a CD
multirel for that.

Michael

On 13.05.2009 22:17 Uhr, Jan Willem Knopper wrote:
> Michael Kohlhase wrote:
>
>> Sorry for my late entry into this discussion and keeping you waiting.
>>
>>
> Heh and sorry for my late entry... I've been part of a previous
> discussion on this subject, but didn't feel I had anything new to add
> until now.
>
> ...
>
>> What needs to be done is to formulate a CD and propose it to the OM
>> Society for inclusion. Here is what I would do: Propose a CD (relation5
>> maybe) and add a single CDDefinition in it. Crucially, we should have a
>> FMP that explains it: Let me say this in mockOM (where @ stands for OMA)
>>
>> @(M,a_0,R_1,a_1,R_2\ldots,R_n,a_n) = @(and,@(R_1,a_0,a_1),
>> @(M,a_1,R_2\ldots,R_n,a_n))
>>
>>
>
> This sounds good, but I would suggest to consider also adding a
> convenience method in the same CD for the case where R_1=R_2=...=R_n=R .
>
> Then this could be something like
> @(M,R,a_0,a_1,\ldots,a_n) = @(and,@(R,a_0,a_1),@(M,R,a_1,\ldots,a_n))
>
> Would this be a good idea ?
>
> Regards,
>
> Jan Willem Knopper
>

--
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Prof. Dr. Michael Kohlhase,       Office: Research 1, Room 62
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