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2、S') uZ^:^:1.19U4XvFÆρa,XvFÆ ~(i)ρ(x+y)≤ρ(x)+ρ(y);(ii)ρ(λx)=
3、λ
4、ρ(x),λ∈K.F{ρα,α∈A}a,yv (iii)ρα(
5、x)=0Svα∈Ab_x=0.^:1.2 9U4Xl℄yvF{ρα,α∈A}_Xa,B℄$4B℄$4l℄FÆ
6、
7、&luSvα∈A,ρα2
8、R?v&l=FG$X'D_FA~CZ-{ρα,α∈A}7A0Fy[A'{Nα1,...,αn(ǫ)
9、α1,...,αn∈A;ǫ>0,n∈N}.%Nα1,...,αn(ǫ)={x
10、ρα1(x)<ǫ,...,ραn(x)<ǫ}.x∈X,xFy[A'{x+Nα1,...,αn(ǫ)
11、α1
12、,...,αn∈A;ǫ>0,n∈N}.2xβ→x<7<ρα(xβ−x)→07α∈A)S℄=FyG$'HausdorffG$^:1.3 XyvF{ρα,α∈A}z{vB℄$4){xβ}a,Cauchy)qrq}α>0,α∈Al℄β0uρα(xβ−xγ)<ǫSβ,γ>β0bXa,(v }Cauchy)
13、℄XuS[jUgsTsA^:1.4Tk&l4Xt&l4YvT(x0)=y0, Uy0℄Yu}XXV,l℄x0℄XuvXXUuT(U)
14、⊂V,_aT℄x0vR?CAZ-CDbCAyfYG$XAXCZ-{ρα,α∈A}{dβ,β∈B},9gX)AybC(9gB"12^1.1{ρα,α∈A}{dβ,β∈B}9U4XvT_3w3(a)dTw3(b)℄Æρα,α∈A℄d−
15、
16、&l3R?"℄Ædβ,β∈B℄ρ−
17、
18、&l3R?(c)}α∈A,l℄β1,···,βn∈B,C>0,u}x∈X,ρα(x)≤C(dβ1(x)+···+dβn(x)).6x}β∈B,l℄α
19、1,···,αm∈A,D>0,u}x∈X,dβ(x)≤C(ρα1(x)+···+ραm(x)).)k(a)⇒(b)B"AyA(b)⇒(c)α∈A}ραdy[Tsρα(0)=0,2Nα(1),50Fdy[ANβ1,...,βn(ǫ),β1,...,βn∈B,ǫ>0,!Nβ1,...,βn(ǫ)⊂Nα(1).20、aρα_y=2dβ1(x)+···+dβn(x),dβi(y)≤ǫ/2<ǫ,i=1,···,n,2ρα(y)<1.2ρα(x)≤(dβ1(x)+···+dβn(x)).ǫT#0,u}x∈X,f(x)≤C(ρα1(x)+·
21、··+ραm(x)).%11.1A)kD^1.3B℄$&l4X{ρα,α∈A}G{vY{dβ,β∈B}G{vTkXtYvFÆ5=_TR?veRD!7U}β∈B,l℄α1,···,αm∈A,C>0,u}x∈X,dβ(T(x))≤C(ρα1(x)+···+ραm(x)).3^:1.59U4X{ρα,α∈A}9v U}α,β∈A,l℄γ∈AC>0,uU}x∈X,ργ(x)≤C(ρα(x)+ρβ(x)).yoDfYG$X
22、Z-C{ρα,α∈A}'fAα1,···,αm∈A,5γ∈AC>0,!x∈X,γ(x)≤C(ρα1(x)+···+ραm(x)).(1.1B℄$&l4X9v{ρα,α∈A}G{v_f∈X∗w3Ul℄α∈A,C>0,u}x∈X,f(x)≤Cρα(x).$1.1}B℄$&l4Xl℄FÆWZw3vDS9vDUg//ZG$AaoTs[}Ay=FAyG$}')S{)k}