table of contents

logic formulas

2023-05-25

note that and represent true and false, respectively

propositional logic

equivalence

number equivalence rule name
E1  
E2  
E3  
E4  
E5  
E6  
E7  
E8  
E9  
E10  
E11  
E12  
E13  
E14 distributivity
E15 distributivity
E16 de morgan
E17 de morgan
E18  
E19  
E20  
E21  
E22  
E23  

logical implication

number implication rule name
I1  
I2  
I3  
I4  
I5  
I6  
I7  
I8  
I9  
I10  
I11  
I12  
I13  
I14  

first-order logic

logical implication

number implication
I'1
I'2
I'3
I'4
I'5
I'6
I'7
I'8
I'9
I'10

rule of inference

name rule of inference
Universal Instantiation where is some arbitrary element of the universe
Universal Generalization where holds for every element of the universe
Existential Instantiation where is some element of the universe of discourse. it is not arbitrary but must be one for which is true
Existential Generalization where is an element of the universe