JournalsprimsVol. 25, No. 3Publications of the Research Institute for Mathematical SciencesVolume 25, No. 3 (1989)DOI 10.4171/PRIMSISSN 0034-5318eISSN 1663-4926pp. 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 <i>p</i>-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<sub>j</sub>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 <i>L</i><sup>2</sup> Cohomology of Complex DomainsTakeo Ohsawapp. 503–520A PoIncare-BIrkhoff-Witt Theorem for Quantized Universal Enveloping Algebras of Type <i>A<sub>N</sub></i>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 <i>L</i><sup>2</sup> Cohomology of Complex DomainsTakeo Ohsawa

pp. 503–520A PoIncare-BIrkhoff-Witt Theorem for Quantized Universal Enveloping Algebras of Type <i>A<sub>N</sub></i>Hiroyuki Yamane