User blog comment:AarexWikia04/Aarex Cardinal/@comment-1605058-20160729220551/@comment-29014792-20160729222747

How about this
 * \(\Omega\) collapsed in \(\psi(\Omega)\)
 * \(I\) collapsed in \(\psi(\psi_I(0))\)
 * \(M\) collapsed in \(\psi(\psi_{\chi(M)}(0))\)
 * \(I : 2\) collapsed in \(\psi(\psi_{\chi(\chi_{I : 2}(0))}(0))\)
 * \(M : 2\) collapsed in \(\psi(\psi_{\chi(\chi_{\xi(M : 2)}(0))}(0))\)
 * \(I : 3\) collapsed in \(\psi(\psi_{\chi(\chi_{\xi(\xi_{I : 3}(0))}(0))}(0))\)