List of Systems Scientists - A

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• Russell L. Ackoff (1919) is an American scientist in the field of management science, operations research and systems theory.
• Genrich Altshuller (1926–1998) was a Russian engineer and scientist, and inventor of the Theory of Inventive Problem Solving.
• Pyotr Anokhin (1898–1974) was a Russian biologist and physiologist who made important contributions to cybernetics and functional systems.
• Leo Apostel (1925–1995) was a Belgian philosopher who advocated of interdisciplinary research between exact science and humanities.
• W. Brian Arthur (1945), is an Irish economist, is an expert on economics and complexity theory in technology and financial markets, and other applications.
• W. Ross Ashby (1903–1972) was an English psychiatrist and a pioneer field of complex systems.