However based on general Discrete Mathematics concepts here some possible fixes:
Graph theory is a branch of discrete mathematics that deals with graphs, which are collections of nodes and edges. However based on general Discrete Mathematics concepts here
A truth table is a table that shows the truth values of a proposition for all possible combinations of truth values of its variables. denoted by $S = {a_1
A set is a collection of objects, denoted by $S = {a_1, a_2, ..., a_n}$, where $a_i$ are the elements of $S$. However based on general Discrete Mathematics concepts here