Academically, Hasani published a paper on the application of von Neumann-Morgenstein utility function in welfare economics and ethics and variable hobby welfare economics in the early 1950s. After reading four famous game theory papers by Nash during the period of 1950- 1953, I became interested in game theory and entered this research field.

The following is the academic research track of Halsani. In 1956, he explained the mathematical equivalent form of Zhou Sheng's and Nash's negotiation model, and stated the algebraic difference standard of the optimal threat strategy. In 1963, he extended Shapelyvalue to the game with no transferable utility, and proved that his new solution concept was the extension of Shapely value and Nash negotiated solution with variable threats. In a paper published by 1967 and 1968, he explained how to transform a game with incomplete information into a game with complete and incomplete information, so that it can be analyzed by game theory. In 1973, it is explained that "almost all" mixed strategy Nash equilibrium can be reinterpreted as pure strategy strict equilibrium of a game with randomly fluctuating reward function.