Re: Plato problem

["Nguyen Tien Zung" <tienzung@darboux.math.univ-montp2.fr>]

> cu?a g/s DDa`o Tro.ng Thi. Theo to^i chuye^.n the^' na`y. G/s Thi co'
vie^'t
> quye^?n sa'ch vo+'i tha^`y cu?a mi`nh la` vie^.n sy~ Phomenko, ngu+o+`i
ra^'t
> no^?i tie^'ng (g/s full khi chu+a 30, v/s tho^ng ta^'n khi co`n ra^'t
tre?, v/s
> cu~ng va^.y). Trong quye^?n sa'ch ddo' ca'c ta'c gia? no'i dda~ gia?i
quye^'t
> xong Plato problem. Tuy nhie^n, trong Math. Review, reviewer co' comment
la`
> kho^ng the^? no'i la` gia?i quye^'t xong Plato problem ddu+o+.c vi` ca'c
ta'c
> gia? ddu+a ve^` ti'nh 1 constant ma` kho^ng the^? ti'nh ddu+o+.c (hay
qua'
> phu+'c ta.p). Reviewer co' no'i the^m dda.i dde^? la` reviewer tru+o+'c
> ddo' dda~ ga(.p Phomenko o+? ho^.i nghi. quo^'c te^' va` dda~ no'i
Phomenko
> ddie^`u ddo' ma` kho^ng hie^?u sao ca'c ta'c gia? cuo^'n sa'ch va^~n
kho^ng 
> su+?a.

To^i xin ddi'nh chi'nh mo^.t chu't: o^ng tha^\y cua? anh Thi te^n la\
Fomenko,
ba?o ve^. Dr. Nauk na(m 28 tuo^?i, ddu+o+.c Kolmogorov dda'nh gia' la\ co'
trie^?n vo.ng, va\ mo^.t tho+\i no^?i danh nhu+ co^\n. Tuy nhie^n va\o
Vie^.n
ha\n la^m thi\ kho^ng so+'m la('m, pha?i ga^\n 50 tuo^?i. Ca'i constant gi\
ddo'
thu+.c ra la\ mo^.t ca'i dda'nh gia' cha(.n tre^n cha(.n du+o+'i gi\ ddo'
dde^? du\ng
cho vie^.c chu+'ng minh ho^.i tu. , nhu+ng dda'nh gia' cu?a anh Thi
la\ local ma\ ca^\n mo^.t ca'i cha(.n du+o+'i global thi\ mo+'i a'p du.ng
ddu+o+.c
ddi.nh ly' gi\ ddo' (dda^y la\ theo tui nho+', kho^ng dda?m ba?o).