Sıralı Düzgün Uzaylarda Geraghty Büzülmeler

Banach büzülme prensibi, sabit nokta teorinin ilk ve en önemli sonucudur. Bu prensibin literatürde pek çok genelleştirmesi vardır. Bunlardan biri de Geraghty dönüşümüdür.  Bu çalışmada, sıralı düzgün uzaylarda, E-uzaklık fonksiyonu yardımıyla, Geraghty tipli büzülme tanımlanmış ve Geraghty tipli büzülmeyi sağlayan iki dönüşüm için ortak sabit nokta teoremleri ispatlanmıştır. Ayrıca bu teoremlerin bazı sonuçları elde edilmiştir.

Geraghty Contractions in Ordered Uniform Spaces

Banach contraction principle is  first and most essential result in the fixed point theory. There are many generalisations of this principle in the literature. One of them is Geraghty contraction. In this work, Geraghty type contraction was defined via E-distance and common fixed point theorems were proved for two mappings satisfying Geraghty type contraction in ordered uniform spaces. Also, some results of these theorems were obtained.

___

  • [1] Willard, S. 1970. General Topology. Addison-Wesley Publishing.
  • [2] Aamri, M., El Moutawakil, D. 2004. Common fixed point theorems for E-contractive or E-expansive maps in uniform spaces. Acta Mathematica Academiae Peadegogicae Nyiregyhaziensis, 20, 83-91.
  • [3] Altun, I., Imdad, M. 2009. Some fixed point theorems on ordered uniform spaces. Filomat, 23(3), 15-22.
  • [4] Turkoglu, D., Ozturk, V. 2014. (psi-phi)-weak contraction on ordered uniform spaces. Filomat, 28(6), 1265—1269.
  • [5] Ozturk, V., Ansari, A.H. 2017. Fixed point theorems for (F,psi,phi)-contractions on ordered S-complete Hausdorff uniform spaces. New Trends in Mathematical Sciences, 5(1), 243-249.
  • [6] Olisama, V., Olaleru, J., Akewe, H., 2017. Best proximity point results for some contractive mappings in uniform spaces. International Journal of Analysis, 2017, Article ID 6173468.
  • [7] Olisama, V., Olaleru, J., Akewe, H., 2018. Best proximity point results for Hardy–Rogers p-proximal cyclic contraction in uniform spaces. Fixed Point Theory Appl., 2018, Article ID 18.
  • [8] Olatinwo, M.O. 2007. Some common fixed point theorems for self-mappings in uniform space. Acta Mathematica Academiae Peadegogicae Nyiregyhaziensis, 23, 47-54.
  • [9] Aamri, M., Bennari, S., El Moutawakil, D. 2006. Fixed points and variational principle in uniform spaces. Siberian Electronic Mathematical Reports, 3, 137-142.
  • [10] Olatinwo, M.O. 2008. On some common fixed point theorems of Aamri and El Moutawakil in uniform spaces. Applied Mathematics E-Notes, 8, 254-262.
  • [11] Shobkolaei, N., Sedghi, S., 2016. Suzuki-type fixed point results for E-contractive maps in uniform spaces. Thai Journal of Mathematics, 14(3), 575-583.
  • [12] Ran, A.C.M., Reurings, M.C.B. 2004. A fixed point theorem in partially ordered sets and some applications to matrix equations. Proc. Amer. Math. Soc., 132, 1435-1443.
  • [13] Nieto, J.J., Lopez, R.R. 2005. Contractive mapping theorems in partially ordered sets applications to ordinary differantial equations. Order., 22, 223-239.
  • [14] Ciric, L.J., Cakić, N., Rajović, M., Ume, J.S. 2008. Monotone generalized nonlinear contractions in partially ordered metric spaces. Fixed Point Theory Appl., 2008, Article ID 131294.
  • [15] Geraghty, M. 1973. On contractive mappings. Proc Amer Math Soc., 40, 604-608.