* \n IfĀ ĻĀ is an atomic formula (sentential letter) of sentential logic, thenĀ ĻĀ is true onĀ ĻāĀ just in caseĀ ĻĀ assigns the valueĀ TĀ toĀ Ļ, and false otherwise.
* IfĀ ĻĀ is a formula of the formĀ Ā¬Ļ, thenĀ ĻĀ is true onĀ ĻāĀ just in caseĀ ĻĀ is false onĀ Ļā, and false otherwise.
* IfĀ ĻĀ is a formula of the formĀ (Ļ&Ļ), thenĀ ĻĀ is true onĀ ĻāĀ just in case bothĀ ĻĀ andĀ ĻĀ are true onĀ Ļā, and false otherwise.
* IfĀ ĻĀ is a formula of the formĀ (ĻāØĻ), thenĀ ĻĀ is true onĀ ĻāĀ just in case eitherĀ ĻĀ is true onĀ ĻāĀ orĀ ĻĀ is true onĀ Ļā, and false otherwise.
* IfĀ ĻĀ is a formula of the formĀ (ĻāĻ), thenĀ ĻĀ is true onĀ ĻāĀ just in case eitherĀ ĻĀ is false onĀ ĻāĀ orĀ ĻĀ is true onĀ Ļā, and false otherwise.