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## 河合 隆裕

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[1] Microfunctions and pseudo-differential equations, Lect. Notes in Math., 287, Springer, 1973, pp.265-529. (with M. Sato and M. Kashiwara)

[2] On holonomic systems of micro-differential equations, III, Publ. RIMS, Kyoto Univ., 17 (1981), 813-979. (with M. Kashiwara)

[3] Algebraic Analysis of Singular Perturbation Theory, Amer. Math. Soc., 2005 (with Y. Takei; 日本語版 (岩波書店，1998)の英訳)

[4] The exact steepest descent method --- A new steepest descent method based on the exact WKB analysis, Adv. Stud. Pure Math., 42 (2004), 45-61. (with T. Aoki and Y. Takei)

[5] On the exact WKB analysis of operators admitting infinitely many phases, Adv. in Math., 181 (2004), 165--189. (with T. Aoki, T. Koike and Y. Takei)

[6] On the exact WKB analysis of microdifferential operators of WKB type, Ann. Inst. Fourier, 54 (2004), 1393-1421. (with T. Aoki, T. Koike and Y. Takei)

[7] On the Stokes geometry of higher order Painlev\'e equations, Ast\'erisque, 297 (2004), 117-166. (with T. Koike, Y. Nishikawa and Y. Takei)
[8] WKB analysis of higher order Painlev\'e equations with a large parameter --- Local reduction of 0-parameter solutions for Painlev\'e hierarchies $(P_{J})(J=\mathrm{I}, \mathrm{II}-1$ or $\mathrm{II}-2)$, Adv. in Math., in press.

[9] Virtual turning points and bifurcation of Stokes curves for higher order ordinary differential equations, J. Phys., A38 (2005), 3317-3336 (with T. Aoki, S. Sasaki, A. Shudo and Y. Takei)

[10] Virtual turning points --- a gift of microlocal analysis to the exact WKB analysis, RIMS Preprint 1533, 2006. (with T. Aoki, N. Honda, T. Koike, Y. Nishikawa, S. Sasaki, A. Shudo and Y. Takei)

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