$$\mathcal{A}$$ ¬$$\mathcal{A}$$ T F F T
 $$\mathcal{A}$$ $$\mathcal{B}$$ $$\mathcal{A}$$ & $$\mathcal{B}$$ $$\mathcal{A}$$∨$$\mathcal{B}$$ $$\mathcal{A}$$→$$\mathcal{B}$$ $$\mathcal{A}$$↔$$\mathcal{B}$$ T T F F T F T F T F F F T T T F T F T T T F F T
 $$\mathcal{A}$$ $$\mathcal{¬A}$$ 1 0 0 1
 $$\mathcal{A}$$ $$\mathcal{B}$$ $$\mathcal{A}$$ & $$\mathcal{B}$$ $$\mathcal{A}$$∨$$\mathcal{B}$$ $$\mathcal{A}$$→$$\mathcal{B}$$ $$\mathcal{A}$$↔$$\mathcal{B}$$ 1 1 0 0 1 0 1 0 1 0 0 0 1 1 1 0 1 0 1 1 1 0 0 1