NICE TO SEE YOU BACK - DTU Informatics
NICE TO SEE YOU BACK - DTU Informatics
NICE TO SEE YOU BACK - DTU Informatics
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922. Domain Entities 2.3. Parts2.3.2. Properties2.3.2.2. Mereology• Formalisation:(i) type H, HI, L, LI;value(ii) uid HI:H→HI, uid LI:L→LI,mereo H:H→LI-set, mereo L:L→HI-set,axiom•(iii) ∀ l:L card mereo L(l) = 2•(iv) ∀ n:N, l:L, h:H l ∈ obs Ls(obs LS(n)) ∧ h ∈ obs Hs(obs HS(n))•∀ hi:HI hi ∈ mereo L(l) ⇒∃ h ′ :H•h ′∈ obs Hs(obs HS(n)) ∧ uid HI(h)=hi•∧ ∀ li:LI li ∈ mereo H(h) ⇒∃ l ′ :L•l ′∈ obs Ls(obs LS(n)) ∧ uid LI(l)=lic○ Dines Bjørner 2012, <strong>DTU</strong> <strong>Informatics</strong>, Techn.Univ.of Denmark – July 20, 2012: 12:33 92 Domain Science & Engineering
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