Derivation Rules for SD

Reiteration (R)


 

"&" Rules

Conjunction Introduction (&I)

Conjunction Elimination (&E)

or

"É" Rules

Conditional Introduction (ÉI)

Conditional Elimination (ÉE)

"~" Rules

Negation Introduction (I)

Negation Elimination (E)

"Ú" Rules

Disjunction Introduction (ÚI)

or

Disjunction Elimination (ÚE)

"º" Rules

Biconditional Introduction (ºI)

Biconditional Elimination (ºE)

or

Note: These provide a very general statement of the rules of our system, for a bit more guidance in how to cite them in actual derivations, check out "Using the Rules of SD"