David Ellerman
David Patterson Ellerman (born 14 March 1943) is a philosopher and author who works in the fields of economics and political economy, social theory and philosophy, quantum mechanics, and in mathematics. He has written extensively on workplace democracy based on a modern treatment of the labor theory of property and the theory of inalienable rights as rights based on de facto inalienable capacities. Education. Ellerman was born 14 March 1943. He received an undergraduate degree in philosophy from Massachusetts Institute of Technology in 1965. He went on to Boston University for his graduate work, receiving an MA in  philosophy of science in 1967, an MA in economics in 1968, and a doctorate in mathematics in 1972. His PhD thesis was titled "Sheaves Of Relational Structures And Ultraproducts", and was advised by Rohit Jivanlal Parikh. Career. After his PhD, Ellerman remained teaching at Boston University in the mathematics and then the economic department until 1976. He then taught economics at the University of Massachusetts, Boston until 1982, then at Boston College until 1987, and finally at Tufts University until 1990. In 1990, he moved to Ljubljana, Slovenia, where he started a labor consulting firm. From 1992 until 2003, he  worked at the World Bank as an economics advisor to the Chief Economist (Joseph Stiglitz and Nicholas Stern). From 2003 to 2020, he was a visiting scholar at the University of California, Riverside and since 2020, he is an associate researcher at the University of Ljubljana. Books. Ellerman's books include: