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Boomerang Instructions in 70 Languages
 Last updated 27th Mar 2015

             Boomerang by Prof Yutaka Nishiyama at river side of Yodo in 1992

Plus online magazine of Cambrigde University, UK

Mysterious Number 6174, Mar 2006
Most popular article!
Winning Odds, June 2010 (C) Unit Fractions, Feb 2012 (C)
50 Visions of Mathematics
May 2014
Circles rolling on circles
May 2014

            Topics   ( Old Topics since Jan 2011 )
No.206 [6174] Numbers, Functions, Sequences, Sets, Geometry by Andrzej Nowicki in Polish cited ( here ) my article ( Mysterious Number 6174 ) , 27th Mar.

No.205 [Odd Even] イギリスのベストセラー作家アレックス・ベロスの翻訳本『どんな数にも物語がある』が出版され、冒頭の5〜7ページに私の記事 Odd and Even Number Cultures Why \2000 Notes are Unpopular が引用されています。原著は The Grapes of Math であり、Look inside の p4 を参照のこと, 26th Mar.

No.204 [C60] 形の文化会第61回フォーラム(大阪府大)で「セパタクローを用いた新しいC60分子模型」の研究発表をしました(ここ), 21th Mar.

No.203 [Penney Ante] A Markov Chain Analysis of a Pattern Matching Coin Game by James Brofos cited ( here ) my article ( here ) , 18th Mar.



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              51 Mathematics in Daily Life  (J):Japanese, (S):Spanish, (C):Chinese, (Wi):Wikipedia

1. Boomerang (J)(Wi)(R)
2. Five Petals (J)
3. Fixed Point (J)(Wi)
4. Boolean Algebra (J)
5. Stroboscope (J)
6. Egg Shape (J) (S)
7. Barcodes (J)
8. Harmonic Series (J)
9. Moebius (J)
10. Hexaflexagon (J)(Wi)
11. Inside out (J)
12. Miura Folding (J)
13. Sepak Takraw (J)(P)
14. Increasing of Area (J)
15. 6174 (J)(Wi)
16. Palindrome 196 (J) (Wi)
17. Oldham Coupling (J)
18. Planimeter (J)
19. Sicherman Dice (J)
20. Montmort Theory (J)
21. Random Number (J)
22. Root 2 (J)
23. Cycloid (J)
24. Machin and Pi (J)
25. Burnside Lem. (J)(Q)
26. Heptadecagon (J)
27. Sudoku (J)
28. Odd and Even (J)
29. Curve & Straight (J)
30. Finger Count (J) (S)
31. Writing Direction (J)
32. Penney Ante (J)(C)(Wi)
33. Flex Geometry (J)
34. Van Aubel (J)(Wi)
35. Red or Black (J)
36. Similarity Trans (J)
37. 52 Cycling Cards (J)
38. Straw Flute (J)
39. Minor Keys (J)
40. Benham's Top (J)
41. 2000 Yen (J)(Wi)
42. Unit Fraction (J)(C)
43. Card Shuffle (J)
44. Kruskal Count (J)(F)
45. Triangle 3 Colors (J) (Q)
46. Fullerene C60 (J)
47. Random dots, Regular
48. 19 faces of HexFlex
49. Wheel Question (Q)(J)
50. 1/998001(J)
51. Zeta function (J)

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