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n
R (P
n
, V
n+1
, p)
P
n
V
n+1
n + 1 R
p : V
n+1
\ {0} → P
n
p(v) = p(w) ⇐⇒ v = λw
P
n
P
n
V
n+1
P
n
P
n
eϕ : P
0
m
→ P
n
ϕ :
V
0
m+1
→ V
n+1
V
0
m+1
\ {0}
ϕ
//
p
0
V
n+1
\ {0}
p
P
0
m
eϕ
//
P
n
p ◦ ϕ = eϕ ◦ p
0
ϕ
ker ϕ = {0}
ϕ
v ∈ V
n+1
V
0
m+1
p(v) ∈ P
n+1
P
n
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kmqmhikmbbcr sahmo R bjlckjmiht ifguvj (Pn, Vn+1, p) w hghigtqjt al
bmvgigfgxg dbgymhikj Pn w kmvigfbgxg efghifjbhikj Vn+1 fjldmfbghia
n v
n + 1 bj egomd R a h{föm iakbgxg gig|fjymbat
p : Vn+1 \ {0} → Pn I·
ijvgxgw sig p(v) = p(w) ⇐⇒ v = λw
³6*:*,7A :,-*/7B5 Pn ,5EAB57/8 7-)15:0 .3-*170B,-9- .3-/735,
/7B5< -9D5 ,* B-E,015*7 ,*D-35E2:*,0 .30 -+-E,5)*,00 .3-*170B,-9-
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B- Vn+1 ,5EAB5*7/8 5//-½003-B5,,A: / .3-*170B,A: .3-/735,/7B-: Pn <
30 ¨7-: 9-B-387 )7- gig|fjymbam I· ljnjmi bj dbgymhikm Pn hif}vp
i}f} efgmviakbgxg efghifjbhikj<
VWXYZY[Y\]Y^ Ôig|fjymbam ϕe : P 0 → P bjlckjmiht dgf`aldgd
efgmviakbcr efghifjbhikw mhoa h}qmhik}mi oabmubgm gig|fjymbam ϕ :
m n
0
Vm+1
v v
→ Vn+1 jhhgaafgkjbbcr km igfbcr efghifjhik ij gmw sig gdp
v
d}ijiakbj homn}{qjt najxfjddj¿
0
Vm+1 \ {0}
ϕ /V \ {0} II
n+1
p0 p
0 e
ϕ
Pm / Pn
-::27570B,-/7> D05935::A II -E,5)5*7 )7- p ◦ ϕ = ϕe ◦ p0 <
E -.3*D*6*,08 :-30E:5 .3-*170B,AC .3-/735,/7B /6*D2*7 )7- ϕ 8B
68*7/8 :-,-:-30E:-: ker ϕ = {0} .-/1-6>12 0,5)* B*3C,88 /73-15
D05935::A +2D*7 ,* -.3*D*6*,5< @-30E: .3-*170B,AC .3-/735,/7B ,5
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,0*:< 30 ¨7-: -)*B0D,- 0 60,*,-* -7-+35*,0* ϕ +2D*7 0E-:-30E:-:
B*17-3,AC .3-/735,/7B */60 v ∈ Vn+1 ,* .30,5D6*07 -+35E2 .3-/735,
/7B5 Vm+1
0
7- p(v) ∈ Pn+1 ,* :-*7 .30,5D6*57> -+35E2 .3-/735,/7
B5 Pn < 7/D5 /6*D2*7 )7- .3-*170B,A* .3-/735,/7B5 0E-:-3,A 7-9D5
0 7-6>1- 7-9D5 1-9D5 -,0 0:*7 -D,2 0 72 * 35E:*3,-/7> <
μ
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