Give two or three definitions of logic from sources other than the texts. List some of the major subfields of modern logic. List ten nontrivial propositional formulas that are interesting to you.
Logic is the glue that binds together methods of reasoning, in all domains.
If it is, change 's leftmostChild field to point to , and end. Otherwise, follow 's leftmostChild pointer and check this node's nextRightSibling field. If it is NULL, change it to point to . Otherwise, follow the nextRightSibling pointer and repeat the process. First, we show that this definition can satisfy the requirements for an unordered tree in general.