view:26631 Last Update: 2023-4-24
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 Rp,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 43rd 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 43rd 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 42nd 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 42nd 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 41nd 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 |