• Title/Summary/Keyword: noncompact

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SOME PROPERTIES ON SPACES WITH NONCOMPACT GROUP ACTION

  • Lee, Hyang-Sook;Shin, Dong-Sun
    • Communications of the Korean Mathematical Society
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    • v.12 no.3
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    • pp.717-723
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    • 1997
  • The compact transformation group has been developed with lots of properties. Many properties which are satisfied on G-space for compact group G do not hold for noncompact case. To recover some theory on spaces with noncompact group action we give some restriction on G-spaces. Hence we introduced Cartan G-spaces and proper G-spaces for our goal and we prove some properties on these G-spaces with noncompact G.

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The Analysis of Two Span Continuous Composite Plate Girder Bridge by ALFD (ALFD해석방법에 의한 2경간합성교 연구)

  • 한상철
    • Journal of the Korean Society of Safety
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    • v.7 no.4
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    • pp.115-128
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    • 1992
  • The main purpose of this study was to determine whether the inelastic moment-rotation character-istics defined by the lower-bound curve permit economical ALFD for noncompact plate gilders. The study was also intended to determine the benefits of improving the moment-rotation to illustrate the ar plication of the ALFD to noncompact plate girders and to show the Influence of various parameters on the design process. To accomplish these objectives, 34 preliminary designs were made by ALFD or LFD or WSD. In the study, this method of analysis is described first. Next, the design procedures are described. Finally, the resulting designs are presented and discussed.

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ON GENERALIZED VECTOR QUASI-VARIATIONAL TYPE INEQUALITIES

  • Cho, Y.J.;Salahuddin, Salahuddin;Ahmad, M.K.
    • East Asian mathematical journal
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    • v.26 no.1
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    • pp.49-58
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    • 2010
  • In this paper, we consider and study a new class of generalized vector quasi-variational type inequalities and obtain some existence theorems for both under compact and noncompact assumptions in topological vector spaces without using monotonicity. For the noncompact case, we use the concept of escaping sequences.

ON THE ERGODIC SHADOWING PROPERTY THROUGH UNIFORM LIMITS

  • Namjip Koo;Hyunhee Lee
    • Journal of the Chungcheong Mathematical Society
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    • v.37 no.2
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    • pp.75-80
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    • 2024
  • In this paper, we study some dynamics of the uniform limits of sequences in dynamical systems on a noncompact metric space. We show that if a sequence of homeomorphisms on a noncompact metric space has the uniform ergodic shadowing property, then the uniform limit also has the ergodic shadowing property. Then we apply this result to nonwandering maps.

MOTIVICITY OF THE MIXED HODGE STRUCTURE OF SOME DEGENERATIONS OF CURVES

  • Chae, Hi-Joon;Jun, Byung-Heup
    • Bulletin of the Korean Mathematical Society
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    • v.47 no.3
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    • pp.593-610
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    • 2010
  • We consider a degeneration of genus 2 curves, which is opposite to maximal degeneration in a sense. Such a degeneration of curves yields a variation of mixed Hodge structure with monodromy weight filtration. The mixed Hodge structure at each fibre, which is different from the limit mixed Hodge structure of Schmid and Steenbrink, can be realized as $H^1$ of a noncompact singular elliptic curve. We also prove that the pull back of the above variation of mixed Hodge structure to a double cover of the base space comes from a family of noncompact singular elliptic curves.

COINCIDENCE THEOREMS FOR NONCOMPACT ℜℭ-MAPS IN ABSTRACT CONVEX SPACES WITH APPLICATIONS

  • Yang, Ming-Ge;Huang, Nan-Jing
    • Bulletin of the Korean Mathematical Society
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    • v.49 no.6
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    • pp.1147-1161
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    • 2012
  • In this paper, a coincidence theorem for a compact ${\Re}\mathfrak{C}$-map is proved in an abstract convex space. Several more general coincidence theorems for noncompact ${\Re}\mathfrak{C}$-maps are derived in abstract convex spaces. Some examples are given to illustrate our coincidence theorems. As applications, an alternative theorem concerning the existence of maximal elements, an alternative theorem concerning equilibrium problems and a minimax inequality for three functions are proved in abstract convex spaces.

Optimal Design of Continuous Girders Considering Compact and Non-compact Cross-sections (연속보 주부재의 조밀 및 비조밀 단면 최적화 설계)

  • 국중식;신영석
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 1999.10a
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    • pp.143-150
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    • 1999
  • The LRFD Specification defines two sets of limiting width-to-thickness ratios. On the basis of these limiting values, steel sections we subdivided into three categories: compact, noncompact, and slender sections. A compact section is capable of developing a fully plastic stress distribution (plastic moment), and can sustain rotations approximately three times beyond the yield before the possibility of local buckling arises. Noncompact sections can develop the yield stress before local buckling occurs. They may not, however, resist local buckling at the strain levels required to develop the fully plastic stress distribution. In this paper, 1-Type girders of a 2 span continuous steel bridge are divided into compact and non-compact sections and analyzed. In the design process, an optimization skill was adopted and ADS, a Fortran program for Automated Design Synthesis, was used.

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