Publications of Parviz Ahmadi

Publications in Journals

International ISI	23. M. hassani and P. Ahmadi Isometric actions on the four dimensional Minkowski spacetime Differential Geometry and its Applications Vol. 88 (2023) PP. 1-22 DOI: https://doi.org/10.1016/j.difgeo.2023.10. [Abstract ]
International ISI	22. Z. Tadrisi, P. Ahmadi, M. Hassani and S. Safari Conformal actions on the Einstein universe Journal of Geometry and Physics Accepted 2022.
International ISI	21. P. Ahmadi and S. Safari ACTIONS ON THE FOUR DIMENSIONAL PSEUDO-EUCLIDEAN SPACE R^{2,2} WITH A THREE DIMENSIONAL ORBIT Journal of Mathematical Physics, Analysis, Geometry Vol. 18 Issue 3 (2022) PP. 303-331 DOI: https://doi.org/10.15407/mag18.03.303.
International ISI	20. P. Ahmadi, H. Khatibzadeh, S. Mohebbi On the Generation of Nonlinear Semigroups of Contractions and Evolution Equations on Hadamard Manifolds Mediterranean Journal of Mathematics Vol. 18 Issue 5 (2021) DOI: https://doi.org/10.1007/s00009-021-01870. [Abstract ]
داخلي-ISC	19. S. Ranjbar, H. Khatibzadeh and P. Ahmadi تحدب در فضاهای متریک و ژئودزیک پژوهشهای ریاضی Vol. 7 Issue 1 (2021) PP. 1-17. [Abstract ]
International ISI	18. P. Ahmadi and M. Hassani Cohomogeneity one conformal actions on the 3-sphere and the three-dimensional Euclidean space Publicationes Mathematicae Debrecen Accepted 2021. [Abstract ]
International ISI & ISC	17. P. Ahmadi, S. Safari and M. Hassani A Classification of Cohomogeneity One Actions on the Minkowski Space $\mathbb{R}^{3,1}$ Bulletin of the Iranian Mathematical Society Vol. 47 Issue 6 (2021) PP. 1905-1924 DOI: https://doi.org/10.1007/s41980-020-00479. [Abstract ]
International ISI	16. P. Ahmadi and S. Safari On cohomogeneity one linear actions on pseudo-Euclidean space R^p,q Differential Geometry and its Applications Vol. 68 (2020) PP. 1-17 DOI: https://doi.org/10.1016/j.difgeo.2019.10. [Abstract ]
International ISI	15. M. Hassani, P. Ahmadi Cohomogeneity one actions on the three-dimensional Einstein universe Geometriae Dedicata Vol. 206 Issue 1 (2020) PP. 105-150 DOI: https://doi.org/10.1007/s10711-019-00479. [Abstract ]
داخلي-ISC	14. P. Ahmadi, M. Hassani and R. Mirzaei مروری بر عمل های از نقص همگنی یک فرهنگ و اندیشه ریاضی Vol. 38 Issue 64 (2019) PP. 79-98.
International ISI	13. P. Ahmadi Cohomogeneity One Dynamics on Three Dimensional Minkowski Space Journal of Mathematical Physics, Analysis, Geometry Vol. 15 Issue 2 (2019) PP. 155-169.
International ISI	12. P. Ahmadi and H. Khatibzadeh, Semi-group generated by evolution equations associated with monotone vector fields Publications Mathematicae Debrecen Vol. 93 (2018) PP. 285-301.
International ISI	11. P. Ahmadi and Masoud Hasani A note on extrinsic frame homogeneity of hyperquadrics Italian Journal of Pure and Applied Mathematics Vol. 37 (2017) PP. 473-476 DOI: 1.
International-ISI	10. P. Ahmadi and H. Khatibzadeh Long time behavior of quasi-convex and pseudo-convex gradient systems on Riemannian manifolds Filomat Vol. 31 Issue 14 (2017) PP. 4571-4578 DOI: 2.
International ISI & ISC	9. P. Ahmadi and H. Khatibzadeh On the convergence of solutions to a difference inclusion on Hadamard manifolds Bulletin of the Iranian Mathematical Society Vol. 41 Issue 4 (2015) PP. 1045-1059 DOI: 1. [Abstract ]
International-ISI	8. P. Ahmadi Cohomogeneity one three dimensional anti de Sitter space, proper and nonproper actions Differential Geometry and its Applications Vol. 39 (2015) PP. 93-112 DOI: 10.1016/j.difeo.2015.01.004. [Abstract ]
International	7. P. Ahmadi and H. Khatibzadeh Convergence and Rate of Convergence of a Non-autonomous Gradient System on Hadamard Manifolds Lobachevskii Journal of Mathematics Vol. 35 Issue 3 (2014) PP. 165-171.
International-ISI	6. P. Ahmadi, H. Khatibzadeh ON THE CONVERGENCE OF INEXACT PROXIMAL POINT ALGORITHM ON HADAMARD MANIFOLDS TAIWANESE JOURNAL OF MATHEMATICS Vol. 18 (2014) PP. 419-433.
International ISI & ISC	5. P. Ahmadi Singular orbits in cohomogeneity one pseudo Euclidean space R^4_v . Bulletin of the Malaysian Mathematical Sciences Society Vol. 38 Issue 1 (2015) PP. 73-90 DOI: 10.1007/s40840-014-004-1. [Abstract ]
International-ISI	4. P.Ahmadi On groups acting by cohomogeneity one on the Euclidean space J. Contemp. Math. Anal. Vol. 45, No. 3, (2010), 174-177.
International ISI	3. P. Ahmadi, S.M.B. Kashani, Cohomogeneity one Minkowski space $\mathbb{R}ⁿ₁$ Publicationes Mathematicae Debrecen Publ. Math. Debrecen 78 (2011), no. 1, 49–59.
International ISI	2. P.Ahmadi, S.M.B. Kashani, H.Abedi, Cohomogeneity one de Sitter space Sⁿ₁ Acta Mathematica Sinica Acta Math. Sin.(Engl. Ser.) 26 (2010), no. 10, 1915–1926.
International ISI & ISC	1. P. Ahmadi, S.M.B. Kashani Cohomogeneity one anti de Sitter space H³₁ Bull. Iranian Math. Soc. 35 (2009), no. 1, 221–233.

Presentations in Seminars & Congress
International	10. P. Ahmadi and S. Safari On isometric actions of SL(2,R) on its Lie algebra The 9th seminar on Geometry and Topology University of Maragheh, Maragheh-Iran, 26 - 27 July 2017.
International	9. P. Ahmadi, M. Hassani Cohomogeneity one Three dimensional Hyperquadrics The 8th Seminar on Geometry and Topology Amirkabir University of Technology, Tehran-Iran, 13 - 17 December 2015.
National	8. P. Ahmadi On cohomogeneity one actions of a Heisenberg Lie group on some Lorentz manifolds The 7th Seminar on Geometry and Topology Iran University of Science and Technology, Tehran-Iran, 29 - 30 January 2014.
National	7. P.Ahmadi On the causal character of the orbits in cohomogeneity one Minkowski space 43^rd Annual Iranian Mathematics Conference, University of Tabriz, 27 - 30 August 2012, Tabriz, Iran
National	6. P.Ahmadi Some notes on the isometric action of SL(2;R) on the de Sitter space 43^rd Annual Iranian Mathematics Conference, University of Tabriz, 27 - 30 August 2012, Tabriz, Iran
National	5. P. Ahmadi Riemannian principal orbits in Minkowski space with cohomogeneity one The Sixth Seminar on Geometry and Toplogy (6SGT), 18-20 September 2011, University of Bonab, Iran
National	4. P. Ahmadi ON CLOSED SUBGROUPS OF THE ISOMETRY GROUP OF THREE DIMENSIONAL MINKOWSKI SPACE 42^nd Annual Iranian Mathematics Conference 5-8 September 2011, Vali-e-Asr University of Rafsanjan, Iran.
National	3. P.Ahmadi ON NON-PROPER ACTIONS ON THE DE SITTER SPACE 42^nd Annual Iranian Mathematics Conference. 5-8 September 2011, Vali-e-Asr University of Rafsanjan, Iran
National	2. P.Ahmadi, S.M.B. Kashani, On proper actions on anti de Sitter space 41^nd Annual Iranian Mathematics Conference 12-15 September 2010, University of Urmia, Urmia, Iran.
National	1. P. Ahmadi, S.M.B. Kashani, H. Abedi Cohomogeneity one Lorentzian spaces 40th Annual Iranian Mathematics Conference 17-20 August 2009, Sharif University of Technology, Tehran, Iran