User talk:Kip/Sandbox

Unfortunately I cannot make sense of the contents of this page. Is it supposed to be a definition? What is $A$? Please note the existence of the "Definition" namespace. &mdash; Lord_Farin (talk) 09:51, 12 December 2013 (UTC)


 * please also note the presence of punctuation a basic level of english is needed here it dont make no sense otherwise --prime mover (talk) 11:45, 12 December 2013 (UTC)

Did you check the case $n = 2$? $a \mapsto a^n$ will in general not be injective, hence not invertible... &mdash; Lord_Farin (talk) 07:56, 13 December 2013 (UTC)