A proposition or a statement or a logical sentence is a declarative sentence that can be either true or false.
Example of Propositions
- Jawaharlal Nehru was the first prime minister of India.
- Today is Monday.
Example of Non-Propositions
- What is your name?
- Please come in.
The lowercase letters starting with P are used to represent the proposition.
p: Mahatma Gandhi is the father of India.
q: 2+2 = 4
A statement or propositional variable can be combined with logical connectives (logical operators) to form a single statement will be a compound statement or compound proposition.
There are five logical operators:
|⟶||Implies or If…then||Implication or Conditional|
|⟷||if and only if||Equivalence or Biconditional|
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