identical predication

In logic, predication involves attributing characteristics to a subject to form a meaningful statement. For example, stating "This dish is warm" predicates the characteristic "warm" of the subject "dish." This can be symbolized as Wd, where W represents "warm" and d represents "dish."1

An identical proposition is a specific type of logical statement where the subject and predicate have the same meaning. Affirming such a proposition is considered redundant because the predicate simply restates what is already inherent in the subject. An example of an identical proposition is "nothing inconceivable can be conceived."2