From: Michael Orlitzky Date: Thu, 10 Oct 2019 13:24:17 +0000 (-0400) Subject: eja: add inverse() method for operators. X-Git-Url: http://gitweb.michael.orlitzky.com/?a=commitdiff_plain;h=f18fd7071b8e8165c3388cd408da11432edec806;hp=f18fd7071b8e8165c3388cd408da11432edec806;p=sage.d.git eja: add inverse() method for operators. ---