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Question: Where can one find information on which areas of mathematics are represented at which of the more than 20 universities in the Democratic People's Republic of Korea (DPRK), and on which mathematicians are working there?

The DPRK is a country with a population of about 25 million people, and it is industrialised to a degree which has permitted it to successfully construct nuclear weapons and ICBM's. So one would expect that there are a decent number of mathematicians working at its universities.

However as the country operates an intranet of its own, not much from there is visible from the open internet. -- So in particular Google will not help much further here. Also, most results by researchers from the DPRK are published only in national journals, and mathematicians from the country cannot be found in the Mathematics Genealogy Database. On the other hand, people in the DPRK who need the internet for their work do have access, but with some sites blocked and email possibly monitored.

Edit: The possibly most interesting source available on the open internet I found so far is NKScholar. -- But firstly articles posted on that site are paywallet with prices in local currency, and secondly the site is Korean-language only -- so I can't tell how much one can really find there. Maybe someone else can tell more.

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    $\begingroup$ As far as I know there is some research in applied mathematics, but none in pure mathematics seems to be known. But this is only hearsay from professors in South Korea. $\endgroup$ – ThiKu Jan 11 at 12:31
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    $\begingroup$ You say that you don't want politics in this, but then you throw wild claims (and lurid videos) into your OP... E.g. the US never declared war on Korea in the first place, so it can't be "formally still at war" with it. (the US acted under UNSCR 84, and military funding was given by Congress, but no formal declaration) $\endgroup$ – literature-searcher Jan 11 at 13:14
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    $\begingroup$ Some funny mathematics problems (but irrelevant to the question): pri.org/stories/2013-04-24/can-you-solve-north-korean-math $\endgroup$ – Ben McKay Jan 11 at 16:37
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    $\begingroup$ @BenMcKay Yes -- that is what one gets among the first results when one googles for 'mathematics north korea' ... . $\endgroup$ – Stefan Kohl Jan 11 at 16:44
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    $\begingroup$ I know the problems of mathematical olympiads in North Korea (they are available in Internet), and they are quite nice. $\endgroup$ – Fedor Petrov Jan 12 at 16:18
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Here are some articles on cryptography. (I do not claim the veracity of them, as there is a lot of misinformation.)

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    $\begingroup$ Yes, this set of eight papers posted in 2005 is one of the few poor sources one finds with Google. $\endgroup$ – Stefan Kohl Jan 11 at 14:37
  • $\begingroup$ I would bet that, going "deeper" in the web, one could find more. $\endgroup$ – EFinat-S Jan 11 at 16:08
  • $\begingroup$ Google chrome translates webpages without installing any plugin. It worked for me for your link. Looking at the titles one notes that there's a lot of applied math. $\endgroup$ – EFinat-S Jan 11 at 16:53
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    $\begingroup$ No, it does not work for me with the translator. $\endgroup$ – EFinat-S Jan 11 at 21:07
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    $\begingroup$ You can find in Math Reviews papers with authors affiliated with Kim Il-sung University, e.g. MR3225383, MR3232454 (in finite fields) MR3353738, MR3255419 (in differential geometry). Moreover, Math Reviews has institution information for Kim Il Sung University, see mathscinet.ams.org/mathscinet/search/… . $\endgroup$ – Ofir Gorodetsky Jan 11 at 23:27
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Two mathematicians from North Korea I know are Kim, Jinhyon and Ju, Hyonhui. I like their paper:

Hausdorff dimension of the sets of Li-Yorke pairs for some chaotic dynamical systems including A -coupled expanding systems. (English) Zbl 1390.37028 Chaos Solitons Fractals 109, 246-251 (2018).

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    $\begingroup$ Sorry but I do not know this for sure. $\endgroup$ – Jörg Neunhäuserer Jan 12 at 14:36
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    $\begingroup$ Unrelatedly, there’s quite an interesting story about that journal and its former editor, Mohamed El Naschie. This is now nearly a decade ago and I don’t want to assume the new editors behave like the old ones. But interesting to say the least. en.wikipedia.org/wiki/Mohamed_El_Naschie $\endgroup$ – pupshaw Jan 12 at 15:58
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    $\begingroup$ @pupshaw: That is indeed interesting. -- Do you think one can find a significant amount of serious research in that journal anyway? $\endgroup$ – Stefan Kohl Jan 12 at 17:03
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    $\begingroup$ @JörgNeunhäuserer: Since the paper you cite is far from my area of expertise, I cannot tell anything about its correctness or merits. -- Given what pupshaw said -- can you confirm it is a reasonable paper, or is it possible that it is not without reason that the authors have chosen a journal with that reputation? $\endgroup$ – Stefan Kohl Jan 12 at 17:14
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    $\begingroup$ About CS&F there is an analysis from 2010: richardpoynder.co.uk/Phoenix.pdf $\endgroup$ – ThiKu Jan 12 at 17:34

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