By applying the well-known fixed point theorem of cone expansion and compression. this paper investigates the existence of multiple positive solutions of periodic boundary value problems for first-order functional differential equations with impulse. (C) 2007 Elsevier B.V. All rights reserved.
机构:
I Javakhishvili Tbilisi State Univ, A Razmadze Math Inst, 6 Tamarashvili Str, GE-0177 Tbilisi, GeorgiaI Javakhishvili Tbilisi State Univ, A Razmadze Math Inst, 6 Tamarashvili Str, GE-0177 Tbilisi, Georgia
Kiguradze, Ivan
Sokhadze, Zaza
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机构:
A Tsereteli State Univ, 59 Queen Tamar St, GE-4600 Tbilisi, GeorgiaI Javakhishvili Tbilisi State Univ, A Razmadze Math Inst, 6 Tamarashvili Str, GE-0177 Tbilisi, Georgia
机构:
Cracow Univ Technol, Fac Phys Math & Comp Sci, Ul Warszawska 24, PL-31155 Krakow, PolandCracow Univ Technol, Fac Phys Math & Comp Sci, Ul Warszawska 24, PL-31155 Krakow, Poland