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**Anthony "Tony" Joseph Penico** (June 11, 1923, Philadelphia – November 19, 2011, Missouri) was an American mathematician and engineer. He is known for the Penico theorem,^{[1]} Penico solvability, and Penico series.^{[2]}^{[3]}

After graduating from South Philadelphia High School, Penico was awarded scholarships to the University of Pennsylvania. There he graduated in 1946 with a bachelor's degree in physics and in 1950 with a Ph.D. in mathematics.^{[4]} His dissertation, written under the supervision of Richard D. Schafer, is entitled *The Wedderburn Principal Theorem for Jordan Algebras*.^{[5]} The theorem, which generalizes a theorem of A. A. Albert, was published in the *Transactions of the American Mathematical Society* in 1951.^{[1]} At the 1950 meeting of the International Congress of Mathematicians he was an approved (but not an invited) speaker.^{[6]} In October 1969 he contributed a paper *Functional-analysis identities for biadditive mappings on modules with non-associative scalars* to the 668th meeting of the *American Mathematical Society*.^{[7]}

After receiving his Ph.D., Penico moved with his wife to the Boston area, where he taught mathematics at Tufts College. In the mid-1950s the family moved to Northern California, where he worked as a Senior Engineering Specialist at the GTE's Research Laboratories. In the early 1960s, he became a Senior Research Mathematician at the Stanford Research Institute and also taught part-time at the University of California, Berkeley and at Stanford University. In 1966 Penico became a Professor of Mathematics at the University of Missouri–Rolla (which in 2008 was renamed the Missouri University of Science and Technology). He retired as professor emeritus in 1986.^{[4]}

In 1948 he married Eva Yaremko (1925–2017). They had two sons, David Anthony Penico (1952–2008) and Stephen John Penico (born 1956). Anthony J. Penico died in 2011.^{[4]}

- Fundingsland, O. T.; Faire, A. C.; Penico, A. J. (1954). "Laboratory studies of slow electron colliisions in gases by microwave methods".
*Rocket Exploration of the Upper Atmosphere, Special Supplement to the*Journal of Atmospheric and Terrestrial Physics*. New York: Interscience Publishers. p. 339. Bibcode:1954reua.conf..339F.* - Penico, A. J. (1961).
*Mathematical Methods in the Study of Wave Propagation in Inhomogeneous Media*. Microwave Physics Lab, Mountain View, Ca., report AD0274125 to Defense Defense Information Center. Archived from the original on September 19, 2020. - Penico, A.J. (1961). "Propagation of electromagnetic waves in a plasma with an inhomogeneous electron density".
*Planetary and Space Science*.**6**: 222. doi:10.1016/0032-0633(61)90026-5. - Penico, A. J.; Stanojević, Č. V. (1980). "An integral analogue to parallelogram law".
*Proceedings of the American Mathematical Society*.**79**(3): 427. doi:10.1090/S0002-9939-1980-0567985-1.

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^{a}^{b}Penico, A. J. (1951). "The Wedderburn principal theorem for Jordan algebras".*Transactions of the American Mathematical Society*.**70**(3): 404. doi:10.1090/S0002-9947-1951-0041120-7. ISSN 0002-9947. **^**Jacobson, Nathan (31 December 1968).*Structure and Representations of Jordan Algebras*. American Mathematical Soc. p. 332. ISBN 978-0-8218-4640-7.**^**McCrimmon, Kevin (1983). "Strong nilpotence of solvable ideals in quadratic Jordan algebras" (PDF).*Journal of Algebra*.**81**(2): 488–507. doi:10.1016/0021-8693(83)90199-0.- ^
^{a}^{b}^{c}"Attachment B. (Obituary) Dr. Anthony Joseph (Tony) Penico; General Faculty Meeting Minutes" (PDF).*Missouri University of Science and Technology (registrar.mst.edu)*. May 1, 2012. **^**Anthony Joseph Penico at the Mathematics Genealogy Project**^**"*On the structure of standard algebras*by A. J. Penico".*Proc. International Congress of Mathematicians, Cambridge, Mass*. Vol. 1. 1950. p. 320.**^**"October 25, 1969, Cambridge, Massachusetts Meeting; Program of the Sessions; Abstracts of the Meeting;*Functional-analysis identities for biadditive mappings on modules with non-associative scalars*by Anthony J. Penico" (PDF).*Notices of the American Mathematical Society*.**16**(6): 875 & 952. October 1969.