Individual km#mathematical_logic__symbolic_logic__metamathematics__metamathematic
  >part:  km#application_of_techniques_of_formal_logic_to_mathematics  km#application_of_mathematical_techniques_to_formal_logic  km#sentential_logic  km#predicate_logic  km#logic_for_reasoning_about_computer_programs
  url:  http://en.wikipedia.org/wiki/Mathematical_logic
  >part of:  km#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:  km#abstract_algebra

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