|
This article is cited in 9 scientific papers (total in 9 papers)
On an application of the multiple logarithmic residue to the expansion of implicit functions in power series
A. P. Yuzhakov
Abstract:
By means of a multidimensional analog of the theorem of logarithmic residues, representations are found for the implicit functions $z_j=\varphi_j(w)$, $j=1,\dots,n$, defined by the system of equations
$$
F_j(w,z)=0,\qquad j=1,\dots,n,
$$
where $w=(w_1,\dots,w_m)$, $z=(z_1,\dots,z_n)$, $F_j(0,0)=0$, and $\frac{\partial(F_1,\dots,F_n)}{\partial(z_1,\dots,z_n)}\big|_{(0,0)}\ne0,$
as also for the function $\Phi(w,z)=\Phi(w,\varphi(w))$, $\varphi=(\varphi_1,\dots,\varphi_n)$, where $F_1,\dots,F_n$ and $\Phi$ are holomorphic functions at $(0,0)\in\mathbf C_{(w,z)}^{m+n}$, in the form of power series and certain function series. In particular, a formula is obtained for the inverse of a holomorphic map in $\mathbf C^n$. One degenerate case is considered, where it is still possible to define single-valued branches of the implicit functions.
Bibliography: 16 titles.
Received: 08.07.1974
Citation:
A. P. Yuzhakov, “On an application of the multiple logarithmic residue to the expansion of implicit functions in power series”, Mat. Sb. (N.S.), 97(139):2(6) (1975), 177–192; Math. USSR-Sb., 26:2 (1975), 165–179
Linking options:
https://www.mathnet.ru/eng/sm3647https://doi.org/10.1070/SM1975v026n02ABEH002475 https://www.mathnet.ru/eng/sm/v139/i2/p177
|
Statistics & downloads: |
Abstract page: | 736 | Russian version PDF: | 239 | English version PDF: | 32 | References: | 93 |
|