... yantaicity@163.com1College of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics,Nanjing 210016, People’s Republic of ChinaFull list of author information isavailable at the end of the ... 2011:5http://www.boundaryvalueproblems.com/content/2011/1/5Page 4 of 11Author details1College of Aeronautics and Astronautics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, People’sRepublic of China2College of Science, ... completely continuous, and Te now prove thatP ⊆ P.Proof. For any u Î P, then from properties of G(t, s), T (u)(t) ≥ 0, t Î [0, 1], and itfollows from the definition of T that||T(u)|| ≤α...