Mathematics show that some problems cannot be solved analytically. Could this be true for the exact exchange correlation functional?

Most textbooks state that the form of the exact exchange correlation functional is unknown. It is said to be an unknown mathematical object. Does this mean that said functional is an analytical function? And if so, what is the proof that shows that the functional is analytical?


See my colleagues work, it seems to be the answer you want.


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    $\begingroup$ Welcome to Chem.SE - thanks for posting! It's site policy to include more description in answers than just a link to an external resource -- can you edit your answer to include a summary of their results/conclusions? As well, if you haven't already, please check out the tour and help pages for more information. Enjoy! $\endgroup$
    – hBy2Py
    Nov 25 '16 at 13:08
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    $\begingroup$ This could be a valuable answer, so I encourage you to expound on it as the users above have suggested. $\endgroup$
    – jonsca
    Nov 26 '16 at 5:39

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