Set (Crisp sets):

Fuzzy Sets:

Crisp Set Vs Fuzzy Set:

Intuitionistic Fuzzy Sets: (1)

Intuitionistic Fuzzy Sets: (2)

Geometrical Interpretations(1)

Geometrical Interpretations(2)

Geometrical Interpretations(3)

Geometrical Interpretations(4)

Geometrical Interpretations(5)

Proper IFS:

Necessity and Possibility operators:

Basic elements of IFL: