👉 In mathematical notation, "thirdly" is often used to express a conditional statement where the second part of the sentence (the condition) must be true before the first part can be considered true. It's commonly written as: ``` If x > y AND z = 5, then x < y OR z = 5. ``` This phrase means "if \(x\) is greater than \(y\), and \(z=5\), then \(x\) must be less than