Formal method of proof in which the proposition P(n + 1) is proved true on the hypothesis that the proposition P(n) is true. The proposition is then shown to be true for a particular value of n, say k, and therefore by induction the proposition must be true for n = k + 1, k + 2, k + 3, ... . In many cases k = 1, so then the proposition is true for all positive integers.
The red disc, set towards the hoist, recalls the fight for independence. Green represents Islam, fertility, and the country's youth. Effective date: 25 January 1972.