Research Articles

  1. *Curvature properties of pseudo-sphere bundles over praquaternionic manifolds (joint paper with R.C. Voicu), International Journal of Geometric Methods in Modern Physics, Volume 9, Number 3/2012, 1250024 (23 pages).
  2. *Ruled CR-submanifolds of locally conformal Kähler manifolds, Journal of Geometry and Physics, Volume 62, Number 6/2012, 1366-1372.
  3. *Submanifolds in manifolds with metric mixed 3-structures (joint paper with S. Ianuş and L. Ornea), Mediterranean Journal of Mathematics, Volume 9, Number 1/2012, 105-128.
  4. Conformal Killing-Yano tensors on higher dimensional spacetimes endowed with special structures (joint paper with M. Visinescu, S. Ianuş and A. Visinescu), Proceedings of the Twelfth Marcel Grossmann Meeting on General Relativity. Recent Developments in Theoretical and Experimental General Relativity, Astrophysics, and Relativistic Field Theories, Volume Editors: T. Damour, R. Jantzen and R. Ruffin, World Scientific (2011), 1970-1972.
  5. Harmonic maps and Riemannian submersions between manifolds endowed with special structures
     (joint paper with S. Ianuş and R.C. Voicu), Banach Center Publications, 93 (2011), 277-288.
  6. *Para-hyperhermitian structures on tangent bundles, Proceedings of the Estonian Academy of Sciences, Volume 60, Number 3 / September, 2011, 165-173.
  7. *On some geometric properties of the generalized CES production functions (joint paper with A.D. Vîlcu), Applied Mathematics and Computation, Volume 218, Number 1 / September, 2011, 124-129.
  8. *Riemannian submersions from almost contact metric manifolds(joint paper with S. Ianuş, A.M. Ionescu and R. Mocanu), Abhandlungen aus dem Mathematischen Seminar der Universität Hamburg, Volume 81, Number 1 / April, 2011, 101-114.
  9. *A geometric perspective on the generalized Cobb–Douglas production functions, Applied Mathematics Letters, Volume 24, Number 5 / May, 2011, 777-783.
  10. *Hidden symmetries and Killing tensors on curved spaces
    (joint paper with S. Ianuş and M. Visinescu), Physics of Atomic Nuclei, Volume 73, Number 11 / November, 2010, 1925-1930.
  11. *Paraquaternionic CR-submanifolds of paraquaternionic Kähler manifolds and semi-Riemannian submersions (joint paper with S. Ianuş and S. Marchiafava), Central European Journal of Mathematics, Volume 8, Number 4 / August, 2010, 735-753.
  12. *3-submersions from QR-hypersurfaces of quaternionic Kähler manifolds, Annales Polonici Mathematici, Volume 98, Number 3, 2010, 301-309.
  13. *Semi-Riemannian hypersurfaces in manifolds with metric mixed 3-structures (joint paper with S. Ianuş), Acta Mathematica Hungarica, Volume 127, Numbers 1-2 / April, 2010, 154-177.
  14. *B.Y. Chen Inequalities for Slant Submanifolds in Quaternionic Space Forms, Turkish Journal of Mathematics, Volume 34, Issue 1, 2010, 115-128.
  15. *Riemannian foliations on quaternion CR-submanifolds of an almost quaternion Kähler product manifold, Proceedings of the Indian Academy of Sciences – Mathematical Sciences, vol. 119, No. 5, 2009, 611-618.
  16. *A new class of semi-Riemannian submersion, Romanian Journal of Physics, Vol. 54, Nr. 9–10 (2009), 815–821.
  17. *Conformal Killing-Yano tensors on manifolds with mixed 3-structures (joint paper with S. Ianuş and M. Vişinescu), Symmetry, Integrability and Geometry – Methods and Applications, 5 (2009), 022, 12 pages.
  18. **Paraquaternionic manifolds and mixed 3-structures (joint paper with S. Ianuş), Differential Geometry: Proceedings of the VIII International Colloquium (July 7-11, 2008, Santiago de Compostela, Spain), Eds.Jesús A Alvarez López & Eduardo García-Río, World Scientific Publishing Company 2009, 276-285.
  19. *Some constructions of almost para-hyperhermitian structures on manifolds and tangent bundles (joint paper with S. Ianuş), International Journal of Geometric Methods in Modern Physics, vol. 5, Nr. 6, 2008, 893-903.
  20. *Riemannian submersions from quaternionic manifolds (joint paper with S. Ianuş and R. Mazzocco), Acta Applicandae Mathematicae, vol. 104, Nr. 1/2008, pg. 83-89.
  21. *Foliations on quaternion CR-submanifolds (joint paper with S. Ianuş and A.M. Ionescu), Houston Journal of Mathematics, vol. 33, Nr. 3, 2008, pg. 739-751.
  22. *Harmonic maps from quaternionic Kähler manifolds (joint paper with S. Ianuş and R. Mazzocco), Journal of Nonlinear Mathematical Physics, vol. 15, issue 1, 2008, pg. 1-8.
  23. **Normal semi-invariant submanifolds of paraquaternionic space forms and mixed 3-structures , Proceedings of The International Conference “Differential Geometry and Dynamical Systems”, Bucharest, October 5-7, 2007, BSG Proceedings 15 (2008), Geometry Balkan Press, pp. 221-229.
  24. On the existence of harmonic metrics on manifolds endowed with quaternionic structures (joint paper with A.D. Vîlcu), Proceedings of the 4-th National Conference on Applied Physics, Galati, September 25-26, 2008, The Annals of The “Dunarea de Jos” University of Galati, Mathematics, Physics, Chemistry, Informatics, Fascicle II, N.S., Year II (XXXI), 2008, 94-100.
  25. Hypersurfaces of paraquaternionic space forms (joint paper with S. Ianuş), Proceedings of the 3rd Baltic-Nordic Workshop, Algebra, Geometry, and Mathematical Physics, Gőteborg, October 11–13, 2007, Journal of Generalized Lie Theory and Applications, vol. 2, No. 3 /2008, 175-179.
  26. Some remarks on harmonic metrics on hyper-Kähler manifolds (joint paper with A.D. Vîlcu), JP Journal of Geometry and Topology,  vol. 7, Issue 3, 2007, pg. 397-403.
  27. A note on paraquaternionic manifolds (joint paper with A.M. Ionescu), Missouri Journal of Mathematical Sciences, vol. 19, Issue #3 – Fall 2007, pg. 213-218.
  28. Submanifolds of an almost paraquaternionic Kähler product manifold, International Mathematical Forum, vol. 2, Nr. 15/2007, pg. 735-746.
  29. Semi-Riemannian submersions from normal semi-invariant submanifolds, Bul. Inst. Polit. Iaşi, Secţia Matematică, Mecanică Teoretică, Fizică, Tomul LIII (LVII), Fasc. 5 (2007), pg. 413-421.
  30. A Schur-type theorem on an indefinite quaternionic Kahler manifold, International Journal of Contemporary Mathematical Sciences, vol. 2, Nr. 11/2007, pg. 529-536.
  31. Curvature identities on almost C – manifolds (joint paper with A.M. Ionescu), Proceedings of The International Conference Riemannian Geometry and Applications: Dedicated to the memory of Radu Rosca, Braşov, June 21-26, 2007, Bulletin of The Transilvania University of Brasov, vol. 14 (49)/2007 – Series B, 127-132.
  32. *Real lightlike hypersurfaces of paraquaternionic Kähler manifolds (joint paper with S. Ianuş and R. Mazzocco), Mediterranean Journal of Mathematics, vol. 3, Nr. 3-4/2006, pg. 581-592.
  33. Product of paraquaternionic Kähler manifolds, Bull. Math. Soc. Sci. Math. Roumanie 48(96), No. 3 (2005), 345-355.
  34. Some submersions of extrinsic hyperspheres of a Bochner-Kähler manifold, Rendinconti del Circolo Matematico di Palermo, vol. LIV (2005), pg. 343-351.

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