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lang-tex
\inv{x}rather thanx\invbecause (1) it's more readable and (2) you keep the absolute power of the output with\inv{x}and you can change definition with comlete flexibilty.(A + UCV)^{-1} = A^{-1} - A^{-1}U(C^{-1}+VA^{-1}U)^{-1}VA^{-1}vs.(A + UCV)\inv = A\inv - A\inv U(C\inv+VA\inv U)\inv VA\invvs.\inv{(A + UCV)} = \inv{A} - \inv{A}U\inv{(\inv{C}+V\inv{A}U)}V\inv{A}. I find the first two more natural but of course, that's a question of taste. If you don't mind my asking, how is the version with argument more flexible? The one without argument would be able to accommodate all the variants listed here (I think).