Individual #logic.philosophy  the branch of philosophy that analyzes inference
  >part:  #modal_logic.logic  km#inductive_reasoning_system (km)  km#deductive_reasoning_system (km)  km#binary_logic (km)  km#multi-valued_logic (km)  km#informal_logic (km)  km#formal_logic (km)
  url:  http://en.wikipedia.org/wiki/Logic
  >part of:  #philosophy  the rational investigation of questions about existence and knowledge and ethics

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