VerdanaHL7 v3, a health care application layer specification, uses the term with time intervals as an operation on a totally ordered set that produces the smallest interval that is a superset. For example, hull({[1,5], [7,10]}) == [1,10] The unabridged specification part II available on Dr. Schadow's page http://aurora.regenstrief.org/v3dt/ gives nice examples. On Sunday, August 17, 2003, at 05:13 PM, Paul A. Bristow wrote: But as Michael Caine said "Not a lot of people know that" - so I trust you will explain what it does too for the benefit of us mere non-mathematical mortals! Paul | -----Original Message----- | From: boost-bounces@lists.boost.org | [mailto:boost-bounces@lists.boost.org]On Behalf Of gmelquio@ens-lyon.fr | Sent: Sunday, August 17, 2003 7:11 AM | To: Boost mailing list | Subject: Re: [boost] Re: Date iterators in Boost Date-Time | | | En réponse à Jeff Garland <: | | I just wanted to mention that the interval library names this | operation "hull". | It is a mathematically defined term since the operation is indeed a | convex hull. | | Just my two eurocents, | | Guillaume | _______________________________________________ Unsubscribe & other changes: http://lists.boost.org/mailman/listinfo.cgi/boost