We describe the second half of the row reduction algorithm: to go from a matrix in row echelon form to one in reduced row echelon form. This is a matrix equivalent of the naive high school method of back-substitution: evaluating the variables one at a time, starting with the last one, and successively substituting into the next equation.

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Negotiations currently underway in the United Nations are grappling with questions about how to identify, create, and enforce Marine Protected Areas (MPA) beyond national jurisdiction. At the same time, nations concerned with the ocean around Antarctica are considering proposals to create new MPAs in that region. Please join the Wilson Center and The Pew Charitable…

Our latest student lecture features the first lecture in the second term (1st Year) introductory course on Linear Algebra from leading Oxford Mathematician James Maynard. We are making these lectures available to give an insight in to the student experience and how we teach. All lectures are followed by tutorials where pairs of students spend…

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