First Order Logic - Symbols

Overview


Constant Symbols


constant symbols - {% c_1, c_2, ... %}

Function Symbols


function symbols - {% f_{1,1}, f_{1,2} ... f_{2,1}, f_{2,2}... %}

A function symbol is denoted by two numbers, such as {% f_{2,1} %}. The first number gives the number of arguments that the function takes. The second number is just an identifier.

Relation Symbols


relation symbols - {% R_{1,1}, R_{1,2} ... R_{2,1}, R_{2,2}... %}

A relation symbol is denoted by two numbers, such as {% R_{2,1} %}. The first number gives the number of arguments that the relation takes. The second number is just an identifier.

Logical Symbols


logical symbols - {% \land, \lor, \neg, \rightarrow, \iff %}

quantifiers - {% \forall, \exists %}

brackets = {% (,) %}

Equality


constant symbols - {% = %}