Lemma (logic)
Encyclopedia
In informal logic
and argument mapping, a lemma is simultaneously a contention for premise
s below it and a premise for a contention above it.
Informal logic
Informal logic, intuitively, refers to the principles of logic and logical thought outside of a formal setting. However, perhaps because of the informal in the title, the precise definition of informal logic is matters of some dispute. Ralph H. Johnson and J...
and argument mapping, a lemma is simultaneously a contention for premise
Premise
Premise can refer to:* Premise, a claim that is a reason for, or an objection against, some other claim as part of an argument...
s below it and a premise for a contention above it.