41. The type-theoretic foundations of polymorphism are closely related to those of subtyping. 42. He was the first to formulate the discrete and the number theoretic Hilbert transforms. 43. Usual set theoretic notation is employed, though note that T is a multiset. 44. In 1986, he began information-theoretic studies of commodity and financial futures. 45. The first general exposition of the information-theoretic approach was the volume by. 46. Incidence structures of this type are called " set-theoretic ". 47. Wald also showed the power of using measure-theoretic probability theory in statistics. 48. In aphasia, the inherent theoretic linguistics, is complexly interwoven with performance factors. 49. Computational immunology began over 90 years ago with the theoretic modeling of malaria epidemiology. 50. This condition is sometimes known as the set-theoretic Yang-Baxter equation.