José Adem Chahin, Mexican mathematician (Tuxpan,
Veracruz State 27 October 1921 – Ciudad de Mexico 14 February 1991) Son of Lebanese immigrants Developed formulae about Steenrod algebras worldwide known With S. Gitler & Y.K. Lam defined secondary
operations Performed important contributions to immersion problem
Adem relations Adem extension theorem (1952) Adem formula Adem phenomenon Adem-Cartan operads Adem-Cartan algebra His brother, Julián Adem Chahín, mathematician and
geophysicist (Tuxpan, Veracruz State 08 Janeiro 1924 - Authored over 136 works Presented the first correct explanation of cyclones motion towards Northwest in North Hemisphere Series solution for the barotropic vorticity equation
and its application in the study of atmospheric vortices. Tellus 8:364-72, 1956
Developed a thermodynamic climate model for climate prediction known as Adem model On the normal state of the troposphere-ocean continent
system in the Northern Hemisphere. Geofis. Intern. 4:3-32, 1964 Developed Adem model for energy balance On the theory of the general circulation of the
atmosphere. Tellus 14:102-115, 1962 A parametric method for computing the mean water
budget of the atmosphere. Tellus 20:621-32, 1968 With E.E. Villanueva & V.M. Mendoza. A new method
to estimate the seasonal cycle of the heat balance at the ocean surface, with
special application to the Gulf of Mexico. Geofis. Internat. 32:21-4, 1993 |

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