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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.
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Grinfeld is the founder of Lemma, Inc. which has developed the online learning system also called Lemma (
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Grinfeld, Pavel (2010-08-19). "Hamiltonian
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Grinfeld's Lemma site with videos, practice problems, and textbooks
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Introduction to Tensor
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Massachusetts
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