↔ Biconditional §

“if and only if”

Properties §

• commutative
• associative

Truth table §

A	B	A ↔ B
✅	✅	✅
✅	❌	❌
❌	✅	❌
❌	❌	✅

📖 Example: §

• ”If and only if Franz earns more money, he will pay more taxes”