We can define the relation of meanings and especially the truth of logic-mathematic statements by just examining the kinds and sequences of symbols ( i.e. syntactic rules ) . This is the criteria of validity which analytical definition develops .

我们仅通过考察符号的类别和顺序（ 句法规则）就可以确定意义关系问题，尤其是能够确定逻辑-数学语句的真值，这就是分析性定义所确立的有效性 标准。