diff --git a/Concurrent Systems/notes/5 - Software Transactional Memory.md b/Concurrent Systems/notes/5 - Software Transactional Memory.md
index 180ff6d..e3cce6a 100644
--- a/Concurrent Systems/notes/5 - Software Transactional Memory.md	
+++ b/Concurrent Systems/notes/5 - Software Transactional Memory.md	
@@ -142,6 +142,7 @@ X.read_T(i) :=
 
 	∀ Y ∉ read_set(T) do
 		t_depend_T[Y] <- max{t_depend_T[Y], lc(XX).depend[Y]}
+		# a che serve?
 
 	return lc(XX).val
 
@@ -153,6 +154,9 @@ X.write_T(v) :=
 
 try_to_commit_T() :=
 	lock all read_set(T) U write_set(T)
+
+	if ∃ Y ∈ read_set(T) s.t.
+
 	∀ X ∈ read_set(T)
 		if XX.date >= birthdate(T) then
 			release all locks