**THE OLYMPIC**

**MATHEMATICAL MARATHON**

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**George Apostolopoulos**

**Daniel Sitaru**

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**Dedicated to International Mathematical Olympiad Romania 2018**

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**GEORGE APOSTOLOPOULOS**

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** ****George Apostolopoulos was born in Messolonghi - Greece at 23 January 1949. He graduated the University of Ioannina. He is member of “The Mathematical Society of Greece” and member of the tender committee. He is also member of “The Mathematical Society” of USA, Canada and Romania as well. He has published proposed mathematical problems and mathematical solutions through the scientific magazines of the “Mathematical Society” of USA and Canada. There are more than 400 references to his name in mathematical problem-solving situations in famous magazines from whole world such as “American Mathematical Monthly”, “College Mathematical Journal”, “Mathematics Magazine”, “Crux Mathematicorum”. In 2009, he participated as an observer in the World Olympiad which was held in Germany, Breme and in 2010 in the Balkan Olympiad Juniors in Romania. In 2013, he participated as second-in-command at the Balkan Olympiad in Cyprus and in 2014 also as second-in-command at the Balkan Olympiad Juniors held in Ohrida.His book “Beauty of proving” was very appreciated in whole world and it was a best-seller in mathematical world.**

**DANIEL SITARU**

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** ****Daniel Sitaru, born on 9 August 1963 in Craiova, Romania, is teacher at National Economic College "Theodor Costescu" in Drobeta Turnu - Severin. He published 33 mathematical books, last two of these, "Math Phenomenon" and "Algebraic Phenomenon", were very appreciated worldwide. He is founding editor of "Romanian Mathematical Magazine", an Interactive Mathematical Journal with 3.200.000 visitors in 2017 (www.ssmrmh.ro). Many problems from his books were published in famous journals such as "American Mathematical Monthly", "Crux Mathematicorum", "Math Problems Journal", "The Pentagon Journal", "La Gaceta de la RSME", "SSMA Magazine". He also published an impressive number of original problems in all mathematical journals from Romania (GMB, Cardinal, Elipsa, Argument, Recrea****ții ****Matematice). His articles from "Crux Mathematicorum" and "The Pentagon Journal" were also very appreciated.**

**Bibliography**

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- George Apostolopoulos:
*“**The Beauty of Proving*”, Athens 2015, ISBN-978-960-6674-96-9 - Mariana Popescu, Daniel Sitaru:
*““**Traian Lalescu” Constest. Geometry problems”,*Lithography University of Craiova Publishing, Craiova, 1985 - Daniel Sitaru:
*“*Mathematical Statistics”, Ecko – Print Publishing, Drobeta Turnu Severin, 2011, ISBN-978-606-8332-09-3 - Daniel Sitaru, Claudia Nănuţi: “
*National contest of applied mathematics - “Adolf Haimovici”- the county stage”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2011,

ISBN 978-606-8332-11-6

- Daniel Sitaru, Claudia Nănuţi: “
*National contest of applied mathematics - “Adolf Haimovici”- the national stage”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2011, ISBN 978-606-8332-12-3 - Daniel Sitaru, Claudia Nănuți:
*“Contest problems”,*Ecko – Print Publishing, Drobeta Turnu Severin, 2011, ISBN 978-606-8332-22-2 - Daniel Sitaru, Claudia Nănuţi: “
*Baccalaureate – Problems – Solutions –Topics -Scales”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2011, ISBN 978-606-8332-18-5 - Daniel Sitaru:
*“**Affine and euclidiane geometry problems”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2012, ISBN 978-606-8332-29-1 - Daniel Sitaru, Claudia Nănuţi, “
*Baccalaureate – Problems – Tests – Topics – 2010 – 2013”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2012, ISBN 978-606-8332-28-4 - Daniel Sitaru, “
*Hipercomplex and quaternionic geometry”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2013, ISBN 978-606-8332-36-9 - Daniel Sitaru, Claudia Nănuţi: “
*Algebra Basis”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2013, ISBN 978-606-8332-45-1 - Daniel Sitaru, Claudia Nănuţi: “
*Mathematical Lessons”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2013, ISBN 978-606-8332-47-5 - Daniel Sitaru, Claudia Nănuţi: “
*Basics of mathematical analysis”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2014, ISBN 978-606-8332-50-5 - Daniel Sitaru, Claudia Nănuți:
*“Mathematics Olympics”*, Ecko – Print Publishing, Drobeta Turnu Severin, 2014, ISBN 978-606-8332-51-2 - Daniel Sitaru, Claudia Nănuți, Giugiuc Leonard, Diana Trăilescu
*- “Inequalities”,*

Ecko – Print Publishing, Drobeta Turnu Severin, 2015, ISBN 978-606-8332-59-8

- Radu Gologan, Daniel Sitaru, Leonard Giugiuc: “
*300 Romanian Mathematical Challenges*”- Publishing House Paralela 45, Pitesti, 2016, ISBN 978-973-47-2270-9 - Daniel Sitaru: “
*Math Phenomenon*”, Publishing House Paralela 45, Pitesti, 2016,

ISBN 978-973-47-2271-6

- Daniel Sitaru: “
*Algebraic Phenomenon*”, Publishing House Paralela 45, Pitesti, 2017, ISBN 978-973-47-2523-6 - Daniel Sitaru:
*“**Murray Klamkin’s Duality Principle for Triangle Inequalities*”,

The Pentagon Journal-Volume 75 NO 2, Spring 2016

- Daniel Sitaru, Claudia Nănuți: “
*Generating Inequalities using Schweitzer’s Theorem*”-CRUX MATHEMATICORUM-Volume 42, NO1-January 2016 - Daniel Sitaru, Claudia Nănuți: “
*A “probabilistic” method for proving inequalities*”,

CRUX MATHEMATICORUM-Volume 43, NO7, September 2017

- Mihaly Bencze, Daniel Sitaru:
*“*699 Olympic Mathematical Challenges”, STUDIS Publishing House, Iasi, 2017 *“**Romanian Mathematical Magazine*”, Interactive Journal, www.ssmrmh.ro

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