41. Mixed inferences are of special interest to logicians . 42. Other well-known scholars were logicians such as Manikyanandin, Mallavadin and Prabhachandra. 43. In fact, not all mathematicians recognize the work of logicians as worthwhile mathematics. 44. Later logicians , notably Chrysippus, are also thought to have endorsed connexive principles. 45. Many techniques are employed by logicians to represent an argument's logical form. 46. :George Boole's work was " relatively obscure, except among logicians . 47. There doesn't seem to be anything listed for logicians or ethicists ." 48. An interdisciplinary unit, it seeks to meld contributions from philosophers, mathematicians and logicians . 49. He is widely held to be one of the 20th century's premier logicians . 50. Mathematical logicians study formal systems but are just as often realists as they are formalists.