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Feb 28, 2020 at 10:12 comment added Martin Brandenburg Or write $k = \ell[x,y]/\langle x^2,xy,y^2\rangle$ :D
Feb 29, 2016 at 7:58 vote accept Christian
Feb 28, 2016 at 17:43 history edited Jeremy Rickard CC BY-SA 3.0
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Feb 28, 2016 at 17:36 comment added Jeremy Rickard By the way, please don't call a commutative ring $k$ if somebody might want to give an example where $k$ is an algebra over a field. :)
Feb 28, 2016 at 17:35 history answered Jeremy Rickard CC BY-SA 3.0