TRU Mathematics 23−1〔1987〕
ANOTE ON SOME NON−LINEAR EQUATION IN GEMM RELATIVITY
Haruya》NAGAYAMA and 1㎞ko NA(誼Y勘仏
(Received Apri1 9, 1987)
§0. Introduction
[lhi・p・p・・i・aP・・lditi・nal n・t・・f[2]and th・f・11・Win9・・㎎・・f
induces will be used throughout the paper 2
0≦λ,μ,v,α,B,_≦3.
In[2], we searched solutions of the partial differential equations on h
and G−S。d・Ud・“a・f…㎝・・
・・“−1・・v+(・・“gαB−2gUCtgvB)・。(・)・,(・)一・,
(0.1)
gpv▽U▽。(h)・0・
・。Pa。ticular,。e、earch。d。。1。ti。n,。f(0.1)。n R4 Whi。h had ・h。 f。rm。。ch
that
h=h(r),
. ・・eq。d・U・・v・−A(・)62d・2・(・+r2B(・))・・2・・2(・S2・・i・2・d・・2)
with boundary collditions at r=。。 as follows: ・ ’ .
・ ・(・)・…(i),・(・)’・…(1),…2B(・)一…(i)・(…)
From the rOsults of the papers([2] and [3]) and discussion in the first part
of the next section of this paper, this problem reduces to solve the follo砿㎎
non−1inear ordinary differential equation㎝y(x)硫th a bQundary condition at
x=◎oas follows:
ま(・2+x・(・)巌)一・・(畿)2, (…)
’』撫y(・)・…
.1・thi・p・Pe・,舵顧11 fi・d general・・1・ti・n・y(・0・・1・・)・f(0・3)血i・力
have boundary conditions at x=◎。 such that
細y(・0・・1・・)−aO・瓢・(y(・0・・1・・)一㌔)=al
by. a met力od of power series expansion. In particular, we will find two
speeial solutions as follows;
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58
H.NAGAYAMA. AND I. HAGAYAMA
,〈・)・c…t.・a。;・(・)・告, 、.
ぬi(力were g‡ven in [2].
§2. The solution y(aO,a1,x)
. We s tart with t士1e following equalities in [2]; .
・(・)一(本一・)x」、:i;i嵩・
Where we rather use y and x instead ofη and r・ From the boundary conditions
(0.2) at x=g y(x) may satisfy the boundary condition at x=。。 as follows;
・(・)−a。+・(1),− 『 (…)
.⑰ere a。・s. ・ ・6・・t釦・・.we・・・…uc・an四var・ab…−l and⊇…h・
equati㎝(0.3)using this variable.[[hen the equation(0.3)and the・boundary
condition(1.1)bec㎝es as follows: ’ ”
量(・・(・)⇒聖)一・・(書)2, (…)
f(・)−ao+0(・)・
(1.2) is equivalent to the following ordinary differential equation of the
first order:
差一W,賠wl…w+一、f). (・.3)
Now, we study t士le e(luation (1.3)with a iDitial data at z=O as follows:
f(0)−ao加dw(0)=a1・ ・(1・4)
Fピ㎝ the explicit form of (1.3) and the existence theorem of the ordinary
differenti・1・qu・ti…fth・fi・・t・・d…there exi・迦iq・・1y f(・0・・1・・)・・d
w(・0・・1・・)・f・曲i・hare analyti・。n a n・ighbO・h・・d・f・−0胆d・ati・fy血・
equation〈1.3) and the initial condition (1.4). Thus, we may find the
・・1・ti・n f(・0・・1・・)・f(1・2)with an i・iti・1・・nditi…u・)h th・・t
・(・。,・、,・)−a。,豊・。,・、,・)−a、 .
by…th・「d・f・P・wer・eri・・expa・・i・−d f(・0・・1・・)i・i・th・f・m・・
follows:
・(・・・・…)−a・・…+…2・…鵬。・。・n・ (…)
P・tti・g(1・5)i・t・th・1・ft・hand・id・㎝d th・・ight・hand・id・・f(1・2), W・
NON−LiNEAR EQUATION IN(正NERAI、 REILATIVITY
have the following equalities respectively:
詰(・f(・。・・、・・)・蛭。((圃((k+・)・k+、・竃1・(k+・)・k.n+、an)・k・
・・(dfdz)2一蕊(竃・・(一)・k.、一。an)・kl.・.’
C・叩ari・g th・・e t・。・qualiti・・, w・ h・v・ ・ recurf・nt f・imla a、 f。11。w,,
k+1 .
・(k+1)(ll“2)ak+・㌔1、竺(圃一2n)a斑一naゼ、層・・ (1・6)
脆・・fineaf・・c・i・ny(・。・・、・・)byy(・。・・、,・)一・(・。,・i,i)・肚㎝血・
Study of the first part of this・section and the above reSults, we have proved
the following . ’ . . 、 ’
PROPOSエTION. Anon−1inear ordinary differential equation.
忌(・y(・)・・2)畿)一・・(畿)2
・ith bO・・dary・・nditi・n・頑出・t靱y(・)=aO・nd碁低・(y(・)−aO)−al h・・
th・uniq・…1・ti・・y(・0・・1・・)曲i・;h i・analyti…an・ighb・・f・・d’・f x−・…
follows;. 』 . ’
、y(…?…)−a・…(1)・・2(i)2㌔・・一よ。・k(1>k・
曲ere a。(・≧2)are d・t・㎝i・・d by th・.f・11・輌9・ecurrent f・m1・・
k+1
(k’1)(k’2)ak+・㌔1、n裡一2n)a・ak−n+・・
酬K1・F・㎝the ab・ve recurre・t f・㎜・1・・w・fi・d th・t if・0・1=0・
then an=O f・r n≧2・nd・・w・h・v・tw・・peci・1・・1uti・n・a・f。11・w・;
・(・。,・,・)−a。−c…t.,・(・,・、,・)一告,
曲i()hPlay important roles in [2].
噸K2・S。…皿・rical calcu1・ti・n・・f an=a(・)by a c・mp・ter are
given as follows;
a(0)=1 a(0)=2
a( 1)=2 a( 1)=1
a( 2)=−1.000000000000000 a( 2)=−1.000000000000000
a( 3)=6.666666666666667D−1 a( 3)=1.333333333333333
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60
H.NAGAYAMA AND I.NAGAYAMA、
a( 4)=−3.333333333333333D− 1
a( 5)= 5.551115123125783D−18
a( 6)= 0.222222222222222
a( 7)=−0.222222222222222
a( 8) 3.695082230804130D−18
a( 9)= 2.716049382716050D− 1
a(10)=−3.209876543209877D− 1
a(11)=−8.074349270001139D−18
a(12)= 4.897119341563786D− 1
a(13)=−6.255144032921811D− 1
a(14)=−2.928060724286127D−17
a(15)= 1.072702331961591
a(16)=−1.433470507544582
a(17)=−5.224578939412502D−17
a(18)= 2.643194634964183
a(19)=−3.638164913885079
a(20)=−7.479397218527370D−17
a(21)= 7.048519026571154
a(22)=−9.906518315297466
a(23)=0.OOOOOOOOOO(XXX)O
a(24)=1.989418957137293D+1
a(25)=−2.839868583718607D+ 1
a(26)= 6.996113090560986D−16
a(27)=5.860567526153735D+1
a(28)=−8.467015592198069D+ 1
a(29)=2.240134733430858D−15
a(30)=1.785115395897402D+2
a( 4)=−1.916666666666667
a( 5)=2.800000000000000
a( 6)=−4.047222222222222
a( 7)= 5.688888888888889
a(8)一一7.653125−
a( 9)= 9.654320987654322
a(10)=−1.103157021604938D+1
a(11)=1.055030303030303D+1
a(12)=−6.227156781939770
a(13)=−4.675951538173760
a(14)=2.520740229822261D+1
a(15)=−5.737409703468974D+1
a(16)=9.926371310977944D+1
a(17)=−1.400211468531469D+2
a(18)=1.525146498517841D+2
a(19)=』8.493721787722224D+1
a(20)=−1.443572914340212D+2
a(21)= 6.390950952397937D+2
a(22)=−1.4868580575582271>÷3
a(23)= 2.664165740353852D+3
a(24)=−3.854623360592762p十3
a(25)=4.162947425048916D+3
a(26)=−1.760229968892296D+3
a(27)=−6.378853944065186D+3
a(28)= 2.425086389686828D+4
a(29)=−5.535259372548587D+4.
a(30)=9.877879906629117D+4,
Where・w・d・n・t・D+・・ by 10”.
[1]
[2]
[3]
』 REFERENCES . . 』
H.Nagayama, A theory of general relativity by’ №?獅?窒≠戟@ ’
connections 工, TRU MIath., VO1. 20 (1984), 173−168.、
H.Nagayama, A.theory of general relativity by genetal
connections I工iTRU Math.,Vb1. 21 (1985), 287−317.
H.Nagayama, Anote on some variational prOblem in general
relativity, TRU Ma亡h.,Vb1.22 (1986),15−19.
4−622, Shibazono−()ho 3−ban
Kawagudhi−shi, Saitama−ken
333,Japan