Dept. of Mathematics, Jhargram Raj College, Jhargram, Distt. Midnapore, West Bengal, India.
Some mathematical models are suggested, where in populations of Koras, a caste in Ind'a, the states of a sex-Inked diseases will be eliminated or the frequency of these states will be minimum or the time from the state of the sex-linked disease to a normal state will be minimum or the time from the normal state to a state of sex linked disease will bs maximum. Also, some models are suggested where the number of generations that the process is in a normal state is maximum and the number of generations that the process is in a state of sex-linked disease will be minimum.
