Talks

Talks/Lectures

• 1. (Invited) To mesh or not to mesh? Indian Institute of Technology, Kanpur, India, January 10, 2020.

  2. (Invited) Real-time error controlled surgical simulation: Towards the future of personalised medicines. Indian Institute of Technology, Kanpur, India, January 09, 2020.

  3. (Invited) Real-time error controlled surgical simulation: Towards personalised medicines. ICES Seminar, University of Texas, Austin, USA, May 14, 2019.

  4. (Invited) Guaranteed and sharp a posteriori error estimates in isogeometric analysis. Indian Institute of Technology, Kanpur, India, August 30, 2017.

  5. (Invited) Optimal preconditioning in H(curl) and H(div). Indian Institute of Technology, Kanpur, India, August 29, 2017.

  6. (Invited) Real-time error control for surgical simulation. Indian Institute of Technology, Kanpur, India, August 28, 2017.

  7. (Invited) Towards reliable computer assisted surgery. Indian Institute of Technology, Roorkee, India, August 22, 2017.

  8. (Invited) Algebraic multilevel preconditioning in H(curl) and H(div). Indian Institute of Technology, Roorkee, India, August 21, 2017.

  9. Weakening the tight coupling between geometry and simulation in isogeometric analysis. 7th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2016), Crete, Greece, June 5-10, 2016.

  10. (Invited) Generalizing the isogeometric concept: Weakening the tight coupling between geometry and simulation in IGA. International Workshop on High-Order Finite Element and Isogeometric Methods, Jerusalem, Israel, May 30 - June 2, 2016.

  11. Two sided guaranteed and sharp a posteriori error estimates in isogeometric analysis. Isogeometric Analysis and Applications, Annweiler am Trifels, Germany, April 7-10, 2014.

  12. (3rd NRN Seminar) Guaranteed and sharp a posteriori error estimates in isogeometric analysis. Strobl, Austria, October 1-4, 2013.

  13. (Invited-MS) Algebraic multilevel iteration method for isogeometric analysis Minisymposia on Celebrating the 70th birthday of Prof. T.J.R. Hughes during the 12th US National Congress on Computational Mechanics (USNCCM12), Raleigh, USA, July 22-25, 2013.

  14. (Invited) Guaranteed and sharp a posteriori error estimates in isogeometric analysis. International Workshop on Reliable Methods of Mathematical Modeling, University of Jyvaskyla, Finland, July 1-3, 2013.

  15. (Invited-MS) Guaranteed and sharp a posteriori error estimates in isogeometric analysis. Minisymposia on Foundations of isogeometric analysis during the 14th Conference on The Mathematics of Finite Elements and Applications (MAFELAP), Brunel University, London, UK, June 10-14, 2013.

  16. (Invited-MS) Algebraic multilevel preconditioning in H(curl) and H(div). Minisymposia on Large scale computing with applications during the 14th Conference on The Mathematics of Finite Elements and Applications (MAFELAP), Brunel University, London, UK, June 10-14, 2013.

  17. (Invited-MS) Multigrid methods for isogeometric discretization. Minisymposia on Robust multilevel and multiscale methods during the 6th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2012), Vienna, Austria, September 10-14, 2012.

  18. (Invited-MS) A posteriori error estimates for nonconforming approximation of evolutionary convection-diffusion problems. Minisymposia on Guaranteed bounds for Approximation and Modeling Errors during the European Conference on Numerical Mathematics and Advanced Applications (ENUMATH 2011), Leicester, UK, September 5-9, 2011.

  19. A posteriori error estimates for nonconforming approximation of evolutionary convection-diffusion problems. Department of Applied Mathematics III, University of Erlangen, Germany, February 24, 2011.

  20. On functional-type a posteriori error estimates for non-conforming approximations of elliptic problems. ICES Seminar, University of Texas, Austin, USA, August 13, 2009.

  21. Optimal cost for functional-type aposteriori error estimates for discontinuous Galerkin approximations. Minisymposia on A posteriori error estimates for discontinuous Galerkin methods during the 13th Conference on The Mathematics of Finite Elements and Applications (MAFELAP), Brunel University, London, UK, June 9-12, 2009.

  22. (Invited) Guaranteed error estimation with optimal cost. Department of Mathematics, Panjab University Chandigarh, India, December 31, 2008.

  23. (Invited) Cost effective guaranteed a posteriori error estimates for discontinuous Galerkin approximations. Institute Colloquia and Seminars, Indian Institute of Science Education and Research Mohali, India, December 30, 2008.

  24. (Invited) Cost effective guaranteed a posteriori error estimates for discontinuous Galerkin approximations. International Conference on Recent Trends in Computational Partial Differential Equations, Mumbai, India, December 10-13, 2008.

  25. (Invited) Cost effective guaranteed a posteriori error estimates using optimal order multilevel method. Seminar on Numerical Analysis, Department of Mathematics, University of Zurich, Switzerland, October 30, 2008.

  26. Efficient a posteriori error estimates for nonconforming approximation of elliptic problems based on Helmholtz type decomposition of error. Workshop on Reliable Modeling and Scientific Computing, Jyvaskyla, Finland, August 15-16, 2008.

  27. Multilevel preconditioning in H(div) and applications to a posteriori error estimates. Parallel Matrix Algorithms and Applications, Neuchatel, Switzerland, June 20-22, 2008.

  28. A posteriori error estimates for nonconforming approximation of elliptic problems based on Helmholtz type decomposition of the error. 4th Austrian Numerical Analysis Day, Linz, Austria, April 24-25, 2008.

  29. Practical aspects of functional a posteriori error estimates for discontinuous Galerkin approximations of elliptic problems. 7th European Conference on Numerical Mathematics and Advanced Applications (ENUMATH 7), Graz, Austria, September 10-14, 2007.

  30. Guaranteed and computable a posteriori error estimates for discontinuous Galerkin approximations of elliptic problems. International Workshop on Reliable Methods of Mathematical Modeling, St. Petersburg, Russia, July 24-27, 2007.

  31. (Invited-MS) A Multilevel Method for Discontinuous Galerkin Approximation of Three-Dimensional Anisotropic Elliptic Problems. Special session on Robust multilevel and hierarchical preconditioning methods during the 6th International conference on Large-Scale Scientific Computations (LSSC 6), Sozopol, Bulgaria, June 5-9, 2007.

  32. (Invited) High-order discretization, optimal order iterative solution and a posteriori error estimation. MACSI Seminar, University of Limerick, Ireland, December 6, 2006.

  33. (Invited) Functional a posteriori error estimates for discontinuous Galerkin approximations of elliptic problems. Seminar on Numerical Analysis and Computational Science, Institute of Mathematics, Helsinki University of Technology, Finland, October 30, 2006.

  34. (Invited-MS) Multilevel preconditioning of elliptic problems discretized by a class of discontinuous Galerkin methods. Minisymposia on Advanced multigrid methods for system of PDEs during the 17th International Conference on Domain Decomposition Methods (DD 17), St. Wolfgang/Strobl, Austria, July 3-7, 2006.

  35. A-posteriori error estimates for discontinuous Galerkin method. The 12th Conference on The Mathematics of Finite Elements and Applications (MAFELAP 12), Brunel University, London, UK, June 13-16, 2006.

  36. Unified analysis of discontinuous Galerkin methods for elliptic problems - II - Stability and error estimates. Special (Radon) semester on Computational Mechanics, RICAM, Linz, Austria, December 13, 2005.

  37. Unified analysis of discontinuous Galerkin methods for elliptic problems - I. Special (Radon) semester on Computational Mechanics, RICAM, Linz, Austria, December 6, 2005.

  38. Discontinuous Galerkin methods for elliptic problems: An overview and error analysis. Miniworkshop on Discontinuous Galerkin methods during the Special (Radon) semester on Computational Mechanics, RICAM, Linz, Austria, November 29, 2005.

  39. A new discontinuous Galerkin finite element method for free surface flow simulation. 6th European Conference on Numerical Mathematics and Advanced Applications (ENUMATH 6), Santiago de Compostela, Spain, July 18-22, 2005.

  40. (Invited) Water waves in a model basin -- Numerical simulation using discontinuous Galerkin method. Conference on Recent Trends in Nonlinear Analysis and its Applications (CNAA - 04), IIT Mumbai, India, December 11-13, 2004.

  41. (Invited) An implicit discontinuous Galerkin method for linear water waves. RICAM Group Seminar, Linz, Austria, September 27, 2004.

  42. (Invited) An exponentially accurate parallel h-p spectral element method for elliptic problems on non-smooth domains. RICAM Group Seminar, Linz, Austria, September 27, 2004.

  43. (Invited) Parallel h-p Spectral Element Method for General Elliptic Boundary Value Problems on Curvilinear Polygons. 303 WE - Heraeus Seminar on Adaptivity in Finite Element Analysis: Models, Meshes and Polynomial Order, Bad Honnef, Germany, September 7-10, 2003.

  44. Discontinuous Galerkin Methods for Water Waves. SIAM Conference on Computational Science and Engineering, San Diego, USA, February 10-13, 2003.

  45. Parallel h-p Spectral Element Method for Elliptic Problems on Polygonal Domains - Mixed Boundary Conditions. SIAM Conference on Computational Science and Engineering, San Diego, USA, February 10-13, 2003.

  46. h-p Spectral Element Method for Elliptic Problems on Polygonal Domains using Parallel Computers. 9th Euro Conference on Numerical Methods and Computational Mechanics, Miskolc, Hungary, July 15-19, 2002.