Education
Grinfeld received his Doctor of Philosophy in Applied Mathematics from the Massachusetts Institute of Technology in 2003.
Grinfeld received his Doctor of Philosophy in Applied Mathematics from the Massachusetts Institute of Technology in 2003.
He studies problems with moving surfaces in applied mathematics (particularly calculus of variations), geometry, physics, and engineering. He spent two years as a postdoctoral fellow at the Massachusetts Institute of Technology Department of Earth, Atmosphere and Planetary Sciences, conducting research in geodynamics. Grinfeld is the author of the dynamic fluid film equations.
Grinfeld is a co-author (with Haruo Kojima of Rutgers University) of the instability of the 2S electron bubbles.
Grinfeld currently teaches Linear Algebra, Differential Equations, and Tensor Analysis. He is the author of a textbook on Tensor Calculus (2013) as well as an e-workbook on linear algebra.
He has recorded hundreds of video lectures. Several dozen on Tensors (in a video course which may accompany his textbook) as well as over a hundred shorter videos on linear algebra.
Many of these are available on YouTube as well as other sites.
Hydrodynamics and fluid films dynamics, thermodynamics and phase transformations, minimal surfaces and calculus of variations.
He is a member of the Mathematics department at Drexel University.