[Crm-sig] E8 scope note nitpick

Martin Doerr martin at ics.forth.gr
Wed Dec 4 19:49:22 EET 2019

On 12/3/2019 8:32 PM, Robert Sanderson wrote:
> Dear all,
> The scope note for E8 Acquisition starts by saying …
> This class comprises transfers of legal ownership from one or more 
> instances of E39 Actor *to one or more other* instances of E39 Actor.
> [emphasis added]
> Yet example 5 is the loss of title due to the object’s destruction. In 
> this instance surely the ownership is transferred to no one, and thus 
> the first sentence should be to *zero or more* other instances of E39 
> Actor?
Indeed! :-)

I think we have described this as exception, not to make it too 
complicated. It could be from zero to many, and to zero to many, but not 
zero to zero...

I prefer not to write this in one phrase, but our FOL friends may spell 
this out!

> Rob
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  Dr. Martin Doerr
  Honorary Head of the
  Center for Cultural Informatics
  Information Systems Laboratory
  Institute of Computer Science
  Foundation for Research and Technology - Hellas (FORTH)
  N.Plastira 100, Vassilika Vouton,
  GR70013 Heraklion,Crete,Greece
  Email: martin at ics.forth.gr
  Web-site: http://www.ics.forth.gr/isl

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