JournalsprimsVol. 25, No. 3Volume 25, No. 3 (1989) Publications of the Research Institute for Mathematical Sciencespp. 321–346Orbital Stability of the Periodic Solutions of Autonomous Systems with Impulse EffectPavel S. SimeonovD. D. Bainovpp. 347–354A Remark on the Decomposition of Abelian Fiber Spaces over CurvesYoshio Fujimotopp. 355–380On the $p$-Regularlty of Stiefel ManifoldsAtsushi Yamaguchipp. 381–405Local Existence Theorems and Blow-up of Solutions for Quasi-linear Hyperbolic Cauchy Problems in a Domain with Characteristic Boundary Generated by Initial DataReiko Sakamotopp. 407–414Lifting Problem of $η$ and Mahowald's Element $η_{j}$Kaoru Morisugipp. 415–489Proofs and Programs: A Naïve Approach to Program ExtractionHayao Nakaharapp. 491–498On the Boundary Value of a Solution of the Heat EquationTakahiro KawaiTadato Matsuzawapp. 499–502On the Infinite Dimensionality of the Middle $L_{2}$ Cohomology of Complex DomainsTakeo Ohsawapp. 503–520A PoIncare–BIrkhoff–Witt Theorem for Quantized Universal Enveloping Algebras of Type $A_{N}$Hiroyuki Yamane

pp. 321–346Orbital Stability of the Periodic Solutions of Autonomous Systems with Impulse EffectPavel S. SimeonovD. D. Bainov

pp. 381–405Local Existence Theorems and Blow-up of Solutions for Quasi-linear Hyperbolic Cauchy Problems in a Domain with Characteristic Boundary Generated by Initial DataReiko Sakamoto

pp. 499–502On the Infinite Dimensionality of the Middle $L_{2}$ Cohomology of Complex DomainsTakeo Ohsawa

pp. 503–520A PoIncare–BIrkhoff–Witt Theorem for Quantized Universal Enveloping Algebras of Type $A_{N}$Hiroyuki Yamane