Discussion about Truth or Falsity and True or False Proposition

The concepts of truth and falsity have different logical meanings:1.They show whether the subjects' understanding of object is in accordance with the objective reality in a proposition.2.That subject is for or a- gainst one proposition expresses correspondingly the approval or opposition to the other three propositions in the interactive relations among the four propositions A,E,I,O in the same material.3.The meaning of the truth and falsity of a compound proposition is whether its branches can reflect the correctness and wrong of different logical relations formed by different combinations.