1 Subjects: “...Oper...”

2 Subjects: “...symmetric operators...”

3 Subjects: “...symmetric operators...”

4 Subjects: “...Oper...”

5 Subjects: “...commuting operator...”

6 Subjects: “...operations strategy matrix...”

7 Subjects: “...Schrödinger operator...”

8 Subjects: “...port operation...”

9 Subjects: “...cascade joint operation chart...”

10 Subjects: “...operator splitting method...”

11 Subjects: “...operational digital twin...”

12 Subjects: “...operational matrices...”

13 Subjects: “...operations and maintenance...”

14 Subjects: “...tour operator...”