What's the Cartesian Product of {x} and {x}? – math.stackexchange.com 23:38 Posted by Unknown No Comments The exercise I'm working on is "Show that $\{x\} \times \{x\} = \{\{\{x\}\}\}$". The solution I'm seeing says that this is equal to $\{\{\{x\}\}\}$, but I don't get this yet. Here's what I do ... from Hot Questions - Stack Exchange OnStackOverflow via Blogspot Share this Google Facebook Twitter More Digg Linkedin Stumbleupon Delicious Tumblr BufferApp Pocket Evernote Unknown Artikel TerkaitI need a circuit that allows current to flow in both directions through a load, and I came up with this. Is it good or is there a better way? – electronics.stackexchange.comIs it possible for a medieval society to produce enough food for dragons (with the help of magic)? – worldbuilding.stackexchange.comShould we keep the "friendly tag name" feature? – meta.stackexchange.comShort story about a husband-wife duo converting their flabby bodies to exaggerated ideals and then reality ensues – scifi.stackexchange.comHow do I remove the last characters from a string? – unix.stackexchange.comHow to do mathematical programming in LaTeX? – tex.stackexchange.com
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