My publications

1. The problem 2 of IMO 1996,World Federation of Mathematics Competitions, V9, N2, 1996, United Kingdom.
2. A particular case of the Dirichlet’s theorem on arithmetic progression, L’Enseignement Mathematique, V44, (1998), p3-7, Swizerland.
3. A sequence of periodic n-tuples, Mathematical Mayhem, March-April 1996, V8, Issue 4, Canada.
4. Another look at the Volume of a Tetrahedron, Crux with Mayhem, 2001, Canada.
5. On the generalization of certain geometrical inequalities, 3-rd WFNMC Congress (22-27 July, 1998), Zhong Shau, China.
6. The role of geometrical inequalities in studying geometry, ICME-9 (1-9 August, 2000), Tokyo/Makuhari, Japan.
7. Creative work with gifted students on geometry lessons, International Conference (15-19 July, 2002) University of Riga,Latvia.
8. On application of one inequality, Kvant, 1997, N2 (in russian), Russia.
9. Application of one property of the function to proving of certain inequalities, Mathematics at School (Russia), 1988, N6 (in russian).
10. Recurrent sequencies, Mathematical Poshcha, Bolgaria (in bulgarian).
11. On Hexagon-parallelogram, Mathematical education, 2001, N3, p18 (in russian).
12. On periodicity of the sum of periodical functions, Mathematical education, 2000, N2, p13 (in russian).
13. Two geometrical inequalities, Mathematics Plus, 2006, N4,(in bulgarian),Bulgaria.
14. On generalization of the Zallager problem, Mathematics Plus, 2006, N2,(in bulgarian),Bulgaria.
15. Some application s of Fibonacci numbers, Mathemathics Competitions, V11, N2, 1998.
16. Remark on the problem 2 of the XLII IMO and its generalization, Mathematics Competitions, V14, N2, 2001, United Kingdom.
17. Letter, Mathematics Competitions, V15, N1, 2002, United Kingdom.
18. An interesting inequality, Mathematics Competitions, V18, N1, 2005, United Kingdom.
19. Around the inequality from 46-th IMO, Mathematics Competitions, V18, N2, 2005, United Kingdom.
The list of published articles in Armenian.

20. Irrationality of e and  numbers. N.Sedrakyan,Mathemathics and physics at school(Math.Phys.at School),1984, N3.
21. How to work on a problem, K.A.Mnatsakanjan, N.M.Sedrakyan. Math.Phys.at School, 1984, N5.
22. Commemorative XXV-th mathematical Olympiad, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1985, N5.
23. Colored cubes, Math.Phys.at School, 1985, N6.
24. Problems of III-rd round of 25-th republican mathematical Olympiad and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1986, N1.
25. Problems of II-nd round of the republican Olympiad on mathematics, G.A.Tonoyan, N.M.Sedrakyan, A.G.Arutyunyan. Math.Phys.at School, 1986, N 2.
26. Is there a difference? G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1986, N3.
27. Pseudo-scalar product of vectors, G.A.Karagebakyan, V.M.Mkhitaryan, G.S.Arakelyan, N.M.Sedrakyan. Math.Phys.at School, 1986, N5.
28. Problems of the republican mathematical Olympiad and their solutions, G.A.Tonoyan, N.M.Sedrakyan. Math.Phys.at School, 1986, N6.
29. About application of Cauchy inequality, A.M.Abovyan, N.M.Sedrakyan. Math.Phys.at School, 1987, N2.
30. Problems(Tasks) XXVII республикаканской Olympiads on mathematics and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1987, N3.
31. Problemsof the republican mathematical Olympiad and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1987, N5.
32. About irrationality of the sums containing radicals, N.M.Sedrakyan, V.M.Akopyan. Math.Phys.at School, 1987, N6.
33. Recurrent sequences, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1987, N6.
34. Problems of the II-nd round of XXVIII republican mathematical Olympiad and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1988, N2.
35. On application of properties of trigonometrical functions, A.M.Abovyan, N.M.Sedrakyan. Math.Phys. at School, 1988, N3.
36. Problems of the III-rd round of XXVIII republican mathematical Olympiad and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1988, N5.
37. About Ptolemeus theorem, N.M.Sedrakyan, Z.A.Jagdzhyan. Math.Phys.at School, 1988, N6.
38. About application of one geometrical set of points, K.R.Martirosyan, N.M.Sedrakyan. Math.Phys.at School, 1989, N1.
39. Mathematical Olympiads of students in Czechoslovakia, G.Tonoyan, N.M.Sedrakyan. Math.Phys.at School,1989, N1.
40. Problems of the II-nd round of republican mathematical Olympiad and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1989, N2.
41. Mathematical Olympiads of students in Czechoslovakia, G.Tonoyan, N.M.Sedrakyan. Math.Phys.at School, 1989, N3.
42. Problems of the republican mathematical Olympiad and their solutions, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1989, N4.
43. Mathematical Olympiads of schoolboys in Czechoslovakia, G.A.Tonoyan, N.M.Sedrakyan. Math.Phys.at School, 1989, N5.
44. On division of checkered squares, N.M.Sedrakyan, V.M.Akopyan. Math.Phys.at School, 1990, N1.
45. Republican Olympiad on mathematics (1990г., II round), G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1990, N2.
46. “Friendship” international tournament on mathematics, L.Ljubenov, K.Bankov, N.M.Sedrakyan. Math.Phys.at School, 1990, N4.
47. XXX republican Olympiad on mathematics, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1990, N5.
48. Mathematical «Tournament of towns », N.M.Sedrakyan. Math.Phys.at School, 1991, N1.
49. 31-st republican mathematical Olympiad, G.A.Tonoyan, G.A.Karagebakyan, N.M.Sedrakyan. Math.Phys.at School, 1991, N3-4.
50. XXXVIII international mathematical Olympiad, N.M.Sedrakyan. Bnaget , 1998, N1.
51. XXXIX international mathematical Olympiad, N.M.Sedrakyan. School Mathematics, 1998, N2.
52. About one generalization of Zallager problem, N.M.Sedrakyan. School Mathematics, 1999, N1.
53. 36-th republican mathematical Olympiad, N.M.Sedrakyan, Bnaget, 1998, N1.
54. About one geometrical inequality, N.M.Sedrakyan, D.A.Arutyunyan. Bnaget, 1999, N1-2.
55. 37-th republican mathematical Olympiad, N.M.Sedrakyan, Bnaget, 1999, N1-2.
56. Geometrical inequalities, N.M.Sedrakyan, Bnaget, 1999, N3.
57. Necessary and sufficient condition for putting one triangle inside another, N.M.Sedrakyan, N.M.Sedrakyan, School Mathematics, 2000, N2.
58. A method of proving the Gauss, Menelaus, Ceva and Van-Obel theorems using vectors, N.M.Sedrakyan, School Mathematics, 2002, N2.
59. A method of proving the Carnot, Euler, and old Japanese theorems using vectors, N.M.Sedrakyan, School Mathematics, 2002, N4.
60. A method of proving the Stuarts and Ptole’s theorems using vectors, N.M.Sedrakyan, School Mathematics, 2003, N1.
61. Ten problems, with alternative solutions, N.M.Sedrakyan, School Mathematics, 2005, N3.
62. On one inequality, N.M.Sedrakyan, School Mathematics, 2004, N4.
63. On necessary conditions of putting one triangle into another, N.M.Sedrakyan, School Mathematics, 2001, N5.
64. Ten problems, with alternative solutions, N.M.Sedrakyan, School Mathematics, 2005, N3.
65. Around one inequality, N.M.Sedrakyan, School Mathematics, 2005, N5-6.
66. Ten problems, with alternative solutions, N.M.Sedrakyan, School Mathematics, 2006, N1.
67. Given four points on the plane, N.M.Sedrakyan, Giteliq (Knowledge), 2004, p14
68. On one functional eqqation, N.M.Sedrakyan, Bnaget, 2004, N3-4.
69. About one inequality, N.M.Sedrakyan, Bnaget, 2005, N3-4.
70. On applications of Erdos-Mordell inequality, N.M.Sedrakyan, Bnaget, 2002, N1-2.

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