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  • Economics OA Journals / Эдийн Засгийн Нээлттэй Сэтгүүлүүд
  • Mathematics Journals / Математикийн Сэтгүүлүүд
  • Teaching / Хичээлүүд
  • Well Said / Ончтой Үгс
Uuganbaatar Ninjbat's web

Contact: uugnaa.ninjbat@gmail.com, uuganbaatar@num.edu.mn

CV: English and Mongolian

Current & Past Positions: 

  • Current: Since January 2025, the Chairman, Supervisory Board of the Bank of Mongolia; Since January 2024 a member of the Fiscal Stability Council of Mongolia; Since September 2024, Adjunct asso. Prof. at the Department of Economics & associate member of the Department of Mathematics, National University of Mongolia (NUM). Ulaanbaatar, Mongolia. Affiliated to the Institute for Mathematics and Democracy, Wellesley College, USA.

  • Past: Asso. Prof. at the Department of Mathematics, National University of Mongolia (NUM). Ulaanbaatar, Mongolia /2014-2020/ & Senior lecturer, Department of Mathematical Modelling, National University of Mongolia (NUM). Ulaanbaatar, Mongolia /2012-2014/.

  • Past: Part time researcher at Institute of Mathematics and Digital Technology, Mongolian Academy of Sciences /in 2019/.

Education:

  • Ph.D in Economics (2012), Stockholm School of Economics (SSE), Stockholm, Sweden. Thesis: "Essays on Mathematical Economics."

  • Postgraduate Diploma in Economics (2008), Institute for Advanced Studies (IHS), Vienna, Austria. 

  • BA in Public Finance (2005), Dokuz Eylul University, Izmir, Turkey.

Research Interests:

  • Economics (microeconomics, social choice, mathematical economics),

  • Mathematics (discrete and convex geometry, logic and computation, optimization).

Publications in economics (peer reviewed):

  • Monotonicity and qualified majority rules, Economic Theory Bulletin (2019), 7:209-220.

  • Impossibility theorems with countably many individuals, SERIEs-Journal of the Spanish Economic Association (2018), 9(3): 333-350.

  • A missing proof of the Gibbard-Satterthwaite theorem, Hitotsubashi Journal of Economics (2018), 59(1): 1-8.

  • Impossibility theorems are modified and unified, Social Choice and Welfare (2015), 45(4): 849-866.

  • Approval voting without faithfulness, AUCO: The Czech Econ. Review (2013), 7(1): 15-20.

  • Another direct proof for the Gibbard-Satterthwaite theorem, Economics Letters (2012), 116(3): 418-421.

  • An axiomatization of the Leontief preferences, Finnish Economic Papers (2012), 25(1): 20-27.

  • Remarks on Young’s theorem, Economics Bulletin (2012), 32 (1): 706-714.

  • Symmetry vs. complexity in proving the Muller-Satterthwaite theorem, Economics Bulletin (2012), 32(2): 1434-1441.

Publications in mathematics (peer reviewed):

  • The smallest convex K-gon containing N congruent disks, joint with E.Orgil-Erdene, Elemente der Mathematik (2022), 77(3): 122-137. /preprint/

  • The four strongest at the National Museum of Mongolia, The Mathematical Intelligencer (2020), 42(2): 9-14.

  • In the land of convex polygons, joint with D. Purevsuren and G. Bayarmagnai, Resonance: Journal of Science Education (2019), 24(5): 583-595. 

  • Side disks of a spherical great polygon, joint with D. Purevsuren. Forum Geometricorum (2018), 18: 195-201.

  • Another memorable Mongolian Olympiad problem, The American Mathematical Monthly (2016), 123(9): 894-899.

  • On Malfatti's marble problem, Arnold Mathematical Journal (2016), 2: 309-327.

  • Optimality of first-come-first-served: a unified approach, Mongolian Mathematical Journal (2011), 15: 45-53.

Home / Эхлэл

Other publications (in Mongolian, English & Turkish):

  • Мэдээллийн онол ба түүний боломжит хэрэглээнүүд, Үндэсний Cтатистик Cэтгүүл, 2024(18): 77-89.

  • Засаг ба шинжлэх ухаан, Төрийн удирдлага : Онол, арга зүйн сэтгүүл, 2024 (27).

  • Найман төр ба гурван засаг, Парламентын Судалгаа Шинжилгээ, 2024, (8): 38-47.

  • Татварын Судалгааны Орчин Үеийн Хандлага, Эдийн засаг: Онол, практик, (2022), 35: 96-111. (М. Сарангийн хамт, in Mongolian).

  • Монгол тоглоом наадгайн математик шинжилгээ: Дөрвөн хүчтэн тоглоомын жишээн дээр, Музей Судлал (2020), Tomus XXI-I, 151-160. (Э.Оргил-Эрдэнийн хамт, in Mongolian)

  • Шинжлэх ухааны судалгаа гэж юу вэ? Боловсрол Судлал (2019), 10: 23-32. (in Mongolian) 

  • Олон улсын сэтгүүлд өгүүлэл хэвлүүлэхэд юуг анхаарах вэ? Боловсрол Судлал (2018), 9: 29-44. (in Mongolian) 

  • МУИС-д тулгамдаж буй зарим асуудлууд, тэдгээрийг шийдэх арга замууд, Монголын Боловсрол-Инноваци (2018), 1: 19-25. (in Mongolian)

  • Бид ямар үнэ цэн бүтээдэг вэ? Mongolian Economy (2017), 10 сар. (in Mongolian)

  • The development of modern mathematics in Mongolia, Bernoulli News (2015), 22(2): 6-10. (in English)

  • Mongolian translation of the booklet by V.I.Arnold (2004) "Problems for children from 5 to 15" published in Mongolian Math. Olympiad 51: 73-80 (in Mongolian). The second part is to appear in the next issue of the MMO volume.

  • Монголоор oрчуулагдсан математикийн зарим номны тухай/On Some Math. Books Translated into Mongolian/ (2015), Olonlog Journal, (in Mongolian).

  • Эрдэм шинжилгээний ажлыг хэрхэн бичих вэ?/How to Write a Scientific Research?/ (2014), Боловсрол Судлал (Educational Studies), 6: 29-33 (In Mongolian).

  • Асуудал ба Шийдэл /Problems and Solutions/ (2012) Математикийн Хүрээлэнгийн Эрдэм шинжилгээний бүтээл, 2: 67-70 (In Mongolian). 

  • Тендерийн онол буюу тендер зохиох ухаан, (2009) Mongolian Mining Journal. (in Mongolian)

  • Küresel ve bölgesel pazarlarda rekabet stratejisi olarak firmaya özgü avantajların yaratılması, İGEME'den Bakış, Cilt: 3, Sayı: 28, 58-61, (2004). (In Turkish)

Talks given:

  • Mikro İktisadın(Pek)Tartışılmayan Yüzü (SAÜ-MUFAM). Undisclosed aspects of Microeconomics, 2022 Spring. (in Turkish). 

  • Sitting disks of a convex figure, presented at the 2017 Spring Meeting of The Mongolian Math. Soc.

  • CCL: The three pillars of thinking, invited talk to TEDxNUM given in October 2016.

  • Probabilistic aspects of voting, contributed talk at the CIMPA research school on "Stochastic Analysis and Applications," July-August, 2015. Ulaanbaatar, Mongolia.

  • Математикжсан эдийн засгийн удиртгал/Intro. to Math. Econ./ presented at seminar of the Mongolian Economic Association, Spring 2015 (in Mongolian).

  • Шинжлэх ухааны судалгаа гэж юу вэ?/What is a scientific research?/ presented at seminar of the graduate school of the NUM, Fall 2014 (in Mongolian).

  • Сонирхолтой эдийн засаг/Economics Recreations/ public lecture given at the annual students' meeting on "Economics and Mathematics" at the NUM, Spring 2013 (in Mongolian).

  • Тодорхой эрэлттэй орчин дахь нөөцийн удирдлага/Inventory Control with Certain Demand/ short lecture at the Mongolian Logistics Association's education program, Spring 2013 (in Mongolian).

  • Эрсдэлт шийдвэрийн онол/Theories of Decision Making Under Risk/ invited lecture at the second national conference on Risk Management organized by the Fiscal Regulation Authority of Mongolia, January 2013 (in Mongolian).

  • Олны Сонголтын Онолын Зарим Асуудлууд/Some Problems in Social Choice Theory/ talk given at the Math. Institute's seminar, September 2010 (in Mongolian). 

Unpublished Manuscripts:

  • Uluslararası Sermeye Hareketliliğinin Derecesi ve Feldstein-Horioka Bilmecesi, Ankara Üni. Sosyal Bilimler Enstitüsü İktisat YLP Seminer Çalışması. 2006. [in Turkish]

More writings & Interviews & Translations:

  • Эрдэмтэн яах гэж судалгаа хийдэг вэ? /Translation of A. M. Celâl Sengör's article/ GoGo.mn, 2022.

  • Франклин Д. Холзман ба БНМАУ-ын татварын систем, /Franklyn D. Holzman and taxation in the Mongolian People's Republic/ GoGo.mn, 2021. 

  • Монголын Эзэнт Гүрний Татварын Систем: Гурван Бүтээлийн Тойм, /A review of the academic research on taxation in the Mongolian Empire/ GoGo.mn, 2021.

  • Фримен Дайсон: Шинжлэх ухааны хоёр соёл, /Partial translation of Freeman Dyson's "Birds and Frogs"/, GoGo.mn, 2021.

  • Монгол кино баяр хүргэе! /Congratulations to Mongolian Movies/, GoGo.mn, 2020

  • Монгол судлал руу өнгийвөл: Гурван бүтээлийн тойм, GoGo.mn, 2020.

  • Оксфорд ИС-ийн Проф. Жон Боллын ярилцлага /interview with Sir. John Ball from Oxford University/, ikon.mn, 2019.

  • Шинжлэх ухааны судалгаа гэж юу вэ? /What is a scientific research?/, guest speaker at MGLRadio program. 2018.

  • "Тоглоом ба Дүрэм-2" (2014).

  • "Эдийн Засаг ба Эрх Чөлөө" (2009)

  • "Алдаатай Эдийн Засаг: Эдийн Засгийн Амьдралыг Мэргэжлийн Нүдээр Харвал" (2013)

  • "Сонирхолтой Эдийн Засаг: Таны Эдийн Засгийн Боловсролд" (2013)

  • "Тоглоом ба Дүрэм" (2011). 

  • "Дайн ба Францийн математикчид: Бурбакигийн бүлэг" (2010) & MGL Radio prodcast 2019.

  • "Энэтхэгчүүд ба Статистик" (2009)

  • "İktisat Öğrencilerine Tavsiyeler – 2" veya “Biraz Daha Matematik Yapalım” (2007)

  • My Youtube channel with video lectures on Math & Econ.

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