character represents an unknown number of relationships with variables

In fact, all of these symbols were invented or adopted by mathematicians who wanted to avoid repeating themselves or having to use a lot of words to write out mathematical ideas.Many of the symbols used in mathematics are letters,usually from the Latin alphabet or Greek.Characters are often found representing quantities that are unknown,and the relationships between variables.They also stand in for specific numbers that show up frequently but would be cumbersome or impossible to fully write out in decimal form.