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本文证明了,当|zph|c级数解的收敛圆是由奇点决定的,但是只要1/λ+(1/Λ1)] 1/(Λ1),Tc级数解在收敛圆外仍然是个很好的渐近展开式,其中1/Λ1=min(|z|,1);μ+(x)=(1-2μ*x)μ*。The analysis of the present paper shows that in the case of |zph|c series solution, although does not converge outside the convergence circle determined by the singular point zph, is an asymptotic power series so long as 1/λ is less than [0.63+3μ+(1/Λ1)] 1/Λ1, where 1/Λ1=min(|z|,1);μ+(x)=(1-2μ*x)μ*.
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