actualize set-union with action by morphism : set → Agents; : elem → Agent; ∅ → ∅; ++ → ++; # → #; { } → { }; ∪ → ∪; ∩ → ∩; \ → \; -- → --; ∈ → ∈; ⊆ → ⊆; s → ags; s0 → ags0; s1 → ags1; s2 → ags2; a → ag; b → ag0; c → ag1; end actualize