| 1 |
21. l : IdLnk
22. lnk(kind(e')) = l
match(l;t;time(e))

match(l;t';time(e'))

(loc(e) = loc(e') Id & time(e)<time(e')
(
(source(l) = source(l) & t<t'
( source(l) = source(l) & t = t'
( & ||rcvs(l;time(e))||-||snds(l;t)||<||rcvs(l;time(e'))||-||snds(l;t')||)
 | 43 steps |