The Cox ring of the space of complete rank two collineations
We consider the space of complete rank two collineations. Starting from its description as a limit of GIT-quotients of a Grassmanian G(2, n) by a certain {\textbackslash}documentclass\{article\}{\textbackslash}usepackage\{amssymb\}{\textbackslash}begin\{document\}{\textbackslash}pagestyle\{empty\}\${\textbackslash}mathbb \{C\}{\textasciicircum}*\${\textbackslash}end\{document\}-action, we determine the Cox ring by means of toric ambient modifications.
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