TY  - JOUR
AU  - Aranđelović, Ivan
AU  - Keckić, Dragoljub J.
PY  - 2012
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1506
AB  - In this paper we present a simple and unified approach to the fixed point results on cone symmetric spaces and metric type spaces based on symmetric spaces fixed point theory. We also give a new characterization of semi-metric spaces with open balls.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Nonlinear Analysis-Theory Methods & Applications
T1  - Symmetric spaces approach to some fixed point results
EP  - 5168
IS  - 13
SP  - 5157
VL  - 75
DO  - 10.1016/j.na.2012.04.032
ER  - 

@article{
author = "Aranđelović, Ivan and Keckić, Dragoljub J.",
year = "2012",
abstract = "In this paper we present a simple and unified approach to the fixed point results on cone symmetric spaces and metric type spaces based on symmetric spaces fixed point theory. We also give a new characterization of semi-metric spaces with open balls.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Nonlinear Analysis-Theory Methods & Applications",
title = "Symmetric spaces approach to some fixed point results",
pages = "5168-5157",
number = "13",
volume = "75",
doi = "10.1016/j.na.2012.04.032"
}

Aranđelović, I.,& Keckić, D. J.. (2012). Symmetric spaces approach to some fixed point results. in Nonlinear Analysis-Theory Methods & Applications
Pergamon-Elsevier Science Ltd, Oxford., 75(13), 5157-5168.
https://doi.org/10.1016/j.na.2012.04.032

Aranđelović I, Keckić DJ. Symmetric spaces approach to some fixed point results. in Nonlinear Analysis-Theory Methods & Applications. 2012;75(13):5157-5168.
doi:10.1016/j.na.2012.04.032 .

Aranđelović, Ivan, Keckić, Dragoljub J., "Symmetric spaces approach to some fixed point results" in Nonlinear Analysis-Theory Methods & Applications, 75, no. 13 (2012):5157-5168,
https://doi.org/10.1016/j.na.2012.04.032 . .

TY  - JOUR
AU  - Aranđelović, Ivan
AU  - Keckić, Dragoljub J.
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1225
AB  - Recently, Du [W.-S. Du, A note on cone metric fixed point theory and its equivalence, Nonlinear Anal. (2009), doi:10.1016/j.na.2009.10.026] introduced the notion of TVS-cone metric space. In this paper we present fixed point theorem for nonlinear quasi-contractive mappings defined on TVS-cone metric space, which generalizes earlier results obtained by Ilic and Rakocevic [D. Ilic, V. Rakocevic, Quasi-contractions on a cone metric space, Appl. Math. Lett. 22 (2009) 728-731] and Kadelburg, Radenovic and Rakocevic [Z. Kadelburg, S. Radenovic, V. Rakocevic, Remarks on quasi-contractions on a cone metric space, Appl. Math. Lett. 22 (2009) 1674-1679].
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Applied Mathematics Letters
T1  - On nonlinear quasi-contractions on TVS-cone metric spaces
EP  - 1213
IS  - 7
SP  - 1209
VL  - 24
DO  - 10.1016/j.aml.2011.02.010
ER  - 

@article{
author = "Aranđelović, Ivan and Keckić, Dragoljub J.",
year = "2011",
abstract = "Recently, Du [W.-S. Du, A note on cone metric fixed point theory and its equivalence, Nonlinear Anal. (2009), doi:10.1016/j.na.2009.10.026] introduced the notion of TVS-cone metric space. In this paper we present fixed point theorem for nonlinear quasi-contractive mappings defined on TVS-cone metric space, which generalizes earlier results obtained by Ilic and Rakocevic [D. Ilic, V. Rakocevic, Quasi-contractions on a cone metric space, Appl. Math. Lett. 22 (2009) 728-731] and Kadelburg, Radenovic and Rakocevic [Z. Kadelburg, S. Radenovic, V. Rakocevic, Remarks on quasi-contractions on a cone metric space, Appl. Math. Lett. 22 (2009) 1674-1679].",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Applied Mathematics Letters",
title = "On nonlinear quasi-contractions on TVS-cone metric spaces",
pages = "1213-1209",
number = "7",
volume = "24",
doi = "10.1016/j.aml.2011.02.010"
}

Aranđelović, I.,& Keckić, D. J.. (2011). On nonlinear quasi-contractions on TVS-cone metric spaces. in Applied Mathematics Letters
Pergamon-Elsevier Science Ltd, Oxford., 24(7), 1209-1213.
https://doi.org/10.1016/j.aml.2011.02.010

Aranđelović I, Keckić DJ. On nonlinear quasi-contractions on TVS-cone metric spaces. in Applied Mathematics Letters. 2011;24(7):1209-1213.
doi:10.1016/j.aml.2011.02.010 .

Aranđelović, Ivan, Keckić, Dragoljub J., "On nonlinear quasi-contractions on TVS-cone metric spaces" in Applied Mathematics Letters, 24, no. 7 (2011):1209-1213,
https://doi.org/10.1016/j.aml.2011.02.010 . .

TY  - JOUR
AU  - Aranđelović, Ivan
AU  - Keckić, Dragoljub J.
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1006
AB  - In the paper by Khojasteh et al. (2010), the authors tried to generalize Branciari's theorem, introducing the new integral type contraction mappings. In this note we give a counterexample on their main statement (Theorem 2.9). Also we give a comment explaining what the mistake in the proof is, and suggesting what conditions might be appropriate in generalizing fixed point results to cone spaces, where the cone is taken from the infinite dimensional space.
PB  - SpringerOpen
T2  - Fixed Point Theory and Applications
T1  - A counterexample on a theorem by Khojasteh, Goodarzi, and Razani
VL  - 2010
DO  - 10.1155/2010/470141
ER  - 

@article{
author = "Aranđelović, Ivan and Keckić, Dragoljub J.",
year = "2010",
abstract = "In the paper by Khojasteh et al. (2010), the authors tried to generalize Branciari's theorem, introducing the new integral type contraction mappings. In this note we give a counterexample on their main statement (Theorem 2.9). Also we give a comment explaining what the mistake in the proof is, and suggesting what conditions might be appropriate in generalizing fixed point results to cone spaces, where the cone is taken from the infinite dimensional space.",
publisher = "SpringerOpen",
journal = "Fixed Point Theory and Applications",
title = "A counterexample on a theorem by Khojasteh, Goodarzi, and Razani",
volume = "2010",
doi = "10.1155/2010/470141"
}

Aranđelović, I.,& Keckić, D. J.. (2010). A counterexample on a theorem by Khojasteh, Goodarzi, and Razani. in Fixed Point Theory and Applications
SpringerOpen., 2010.
https://doi.org/10.1155/2010/470141

Aranđelović I, Keckić DJ. A counterexample on a theorem by Khojasteh, Goodarzi, and Razani. in Fixed Point Theory and Applications. 2010;2010.
doi:10.1155/2010/470141 .

Aranđelović, Ivan, Keckić, Dragoljub J., "A counterexample on a theorem by Khojasteh, Goodarzi, and Razani" in Fixed Point Theory and Applications, 2010 (2010),
https://doi.org/10.1155/2010/470141 . .