Physical and mathematical scientists

Gheorghe Țițeica

Gheorghe Țițeica (1873–1939) was a Romanian mathematician who founded centro-affine differential geometry, discovered proper affine spheres, wrote over 100 papers, and taught at the University of Bucharest for nearly 40 years.

Ghislain de Marsily

Ghislain de Marsily was a French hydrogeologist and pioneer of quantitative hydrogeology. He shaped environmental modeling, advised on nuclear waste disposal, and authored a classic textbook.

Giacinto Morera

Giacinto Morera (1856–1909) was an Italian mathematician and rational mechanician, professor at Genoa and Turin, known for Morera's theorem, a converse of Cauchy's integral theorem published in 1886.

Giacinto Scoles

Giacinto Scoles (1935–2024) was an Italian-born physical chemist who pioneered molecular beams, cryogenic bolometer detectors, and helium nanodroplet spectroscopy, and was Donner Professor of Science at Princeton from 1987.

Giacomo Albanese

Giacomo Albanese (1890–1947) was an Italian mathematician whose work on algebraic correspondences between surfaces led André Weil to name the Albanese variety after him; he held chairs at Catania, Palermo, Pisa, and São Paulo.

Giacomo Ciamician

Giacomo Luigi Ciamician (1857–1922) was an Italian chemist of Armenian descent who founded organic photochemistry at Bologna, working with Paul Silber, and predicted a solar-powered civilization in 1912.

Giacopo Belgrado

Giacopo Belgrado (1704–1789) was an Italian Jesuit mathematician and experimental physicist, court mathematician to Duke Philip of Bourbon-Parma, who founded the astronomical observatory of Parma in 1757.

Gian Carlo Wick

Gian Carlo Wick (1909–1992) was an Italian theoretical physicist, born and died in Turin, whose 1950 Wick theorem made practical perturbative calculations in quantum field theory possible.

Gian Francesco Giudice

Gian Francesco Giudice, born in Padua in 1961, is an Italian theoretical physicist who heads the Theoretical Physics Department at CERN and is known for work on supersymmetry and naturalness.

Gian-Carlo Rota

Gian-Carlo Rota (1932–1999) was an Italian-born mathematician and philosopher at MIT, the only professor there of both applied mathematics and philosophy, known for making combinatorics mainstream.

Giancarlo Ghirardi

Giancarlo Ghirardi (1935–2018) was an Italian theoretical physicist who taught for 42 years at the University of Trieste and co-authored the GRW model, in which wave functions collapse spontaneously.

Gianfranco Pacchioni

Gianfranco Pacchioni is an Italian theoretical chemist and full professor at the University of Milano-Bicocca whose computational work on oxide surfaces and supported metal atoms anticipated single-atom catalysis.

Gianluca Iaccarino

Gianluca Iaccarino is an Italian mechanical engineer who holds the Robert Bosch Chair at Stanford University, specializing in predictive simulation of complex flows and uncertainty quantification.

Gianluigi Ciovati

Gianluigi Ciovati is an accelerator physicist at Jefferson Lab who studies superconducting radiofrequency cavities, received a 2009 PECASE award, and designs compact accelerators for cleaning wastewater.

Gideon Henderson

Gideon Henderson is a British isotope geochemist and Professor of Earth Sciences at Oxford who uses radioactive isotopes to date past climate events, and served as Defra Chief Scientific Adviser from 2019 to 2025.

Gideon J. Davies

Gideon J. Davies is a British structural biologist and Professor of Chemistry at the University of York, elected a Fellow of the Royal Society in 2010.

Gifford H. Miller

Gifford H. Miller is a paleoclimatologist and Quaternary geologist, Distinguished Professor at the University of Colorado Boulder, known for amino acid dating and research on Australian megafauna extinctions.

Gigliola Staffilani

Gigliola Staffilani is an Italian-born mathematician who studies dispersive partial differential equations such as the Schrödinger equation; she is the Abby Rockefeller Mauzé Professor of Mathematics at MIT.

Gijs de Boer

Gijs de Boer is an atmospheric scientist known for studying Arctic clouds and surface radiation and for developing uncrewed aircraft systems as weather-observing platforms; he received a PECASE award in 2016.

Gil Kalai

Gil Kalai is an Israeli mathematician at the Hebrew University of Jerusalem known for work in combinatorics and for arguing that scalable quantum computers cannot be built.

Gilbert Agnew Hunt

Gilbert Agnew Hunt (1916–2008) was an American mathematician at Princeton known for the Hunt process in probability theory, who as a young man beat tennis champion Bobby Riggs in 1938.

Gilbert Ames Bliss

Gilbert Ames Bliss (1876–1951) was an American mathematician at the University of Chicago known for the calculus of variations, including wartime ballistics work at Aberdeen Proving Ground.

Gilbert Baumslag

Gilbert Baumslag (1933–2014) was an American group theorist who introduced the Baumslag–Solitar groups in 1962 and later worked on computation and cryptography at the City College of New York.

Gilbert Chu

Gilbert Chu is an American scientist and Stanford professor of medicine and biochemistry known for creating Significance Analysis of Microarrays and for research on how cells repair damaged DNA.

Gilbert George Lonzarich

Gilbert George Lonzarich is a physicist at the Cavendish Laboratory in Cambridge whose 1994 observation of pressure-induced superconductivity in CeIn3 gave the first strong evidence that magnetic fluctuations can mediate superconducting pairing.

Gilbert N. Lewis

Gilbert N. Lewis, also known as Gilbert Newton Lewis, was an American physical chemist at Berkeley who created Lewis structures, the electron-pair bond, and Lewis acids and bases.

Gilbert Stengle

Gilbert Stengle (1933–2010) was an American mathematician at Lehigh University known for the 1974 Krivine–Stengle Positivstellensatz, a certificate for polynomial positivity that underlies sum-of-squares optimization.

Gilbert Stork

Gilbert Stork was a Belgian-born American organic chemist at Columbia University whose methods for stereochemical control reshaped synthesis, including the Stork enamine alkylation and the first stereoselective quinine synthesis.

Gilbert Strang

Gilbert Strang is an American mathematician at MIT known for work in numerical analysis, linear algebra, and partial differential equations, and for his widely watched linear algebra lectures.