Individual km#Hoare_logic
  >part of:  logic_for_reasoning_about_computer_programs
     >part of:  mathematical_logic__symbolic_logic__metamathematics__metamathematic
        >part of:  formal_logic
           >part of:  logic.philosophy  the branch of philosophy that analyzes inference
              >part of:  philosophy  the rational investigation of questions about existence and knowledge and ethics
        >part of:  abstract_algebra

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