DAI HOC QUOC GIA HA N O I
TRirOTVG DAI HOC KHOA HOC TlT NHIEN
NGUYEN DUY TAN
VE SO HOC VA DOr DONG DIEU GALOIS CUA NHOM LOY DON
THEN T R U O N G H A M D I A PHU0NG VA TOAN CUC
Chuyen nganh: Dai so va ly thuyet so
Ma so
: 62.46.05.01
LUAN AN
TIEN SI TOAN HOC
NGU'dl HUONG DAN KHOA HOC
PCS. TS. Nguyen Quoc ThSng
OAl HOC Q U O C GIA HA NOI
•RUNG TAM THONG TIN THU VIEN
HA NOI - 2008
Muc luc
Md dau
5
0 Mot so kien thurc chuan b|
0.1 Nhdm dai sdaffine
0.2 Nhdm luy don tr6n trudng dac so p > 0
0.3 Luge dd nhdm affine, luge do nhdm luy don tren trudng . . . .
0.4 Ddi ddng diin Galois
0.5 Ddi ddng dieu phang
0.6 M6t sd khai niem va ky hieu hay dung trong ly thuye't trudng . .
12
12
14
16
19
22
26
1 Tinh toan anh ciia anh xa dja phirang hoa
1.1 Tinh toan anh ciia anh xa dia phuang hda
1.2 Mot vai ling dung
1.3 Mdt md rdng ciia Dinh ly 1.1.1 cho luge dd nhdm luy don . . .
1.4 Ke't luan CLia Chuong 1
28
29
32
35
40
2 Ddi dong dieu Galois cua nhdm luy dan sd chieu < 1 tren trudng
khong hoan thien
2.1 Mdt sd tinh toan nhdm ddi ddng di6u bac 1 ciia nhdm luy don .
2.2 Mdt di^u kifn du cho tinh v6 han cua ddi ddng di6u Galois bae 1
2.3 Ddi ddng di^u cua nhdm luy dan sd ehi6u < 1
2.4 Ke't luan ciia Chuong 2
41
41
50
54
64
3 Ddi dong dieu Galois cua nhdm luy don sd chieu < p — 1 tren trudng
ham dja phuang va toan cue
65
3.1 Ddi ddng di6u Galois cua nhdm luy don tron tr6n trudng ham dia
phuang
66
3.2 Ddi ddng di6a Galois cua nhdm luy don tron tren trudng ham
toan cue
3.3 Vai ap dung ddi vdi nguyen ly dia phuong-toan cue
3.4 Ket luan cua Chuong 3
69
72
73
4 Mot khSng djnh tuong tu cua Gia thuyet Serre va mot sd van de lien
quan
74
4.1 Tinh tri^t tieu ciia nhdm ddi ddng dieu Galois thu" nha't
76
4.2 Phuong trinh xac dinh nhdm liay don sd chieu 1
88
4.3 Ket luan cua Chuong 4
93
Ket luan
94
Danh muc cong trinh cua tac gia lien quan den luan an
96
Tai lieu tham khao
97