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This is the second article dedicated, essentially, to the use of Xypic for constructing commutative diagrams. By using the same kind of approach as in the first part,we focus, now, on frames, matrices and other extensions of the kernel language.
Paul Blaga is an Assistant Professor of Geometry at the Faculty of Mathematics and Computer Sciences of the "BabesBolyai" University in ClujNapoca, Romania. He started using LaTeX in the early 1990's. Initially, his interest was just for writing scientific papers, but afterwards he became more and more involved and gradually turned into a great LaTeX fan.
He has served several years as an editor of the mathematical journal Studia Universitatis Napocensis, Mathematica and was responsible for switching it to LaTeX in the late 1990's. He is also the coauthor of a book on LaTeX.
His main interests in LaTeX are related, especially, to the graphical capabilities  not only commutative diagrams, but also more complicated drawings, made, for instance, with PSTricks.
You can reach Paul at

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