Personal profile
Research interests
For more information please see my personal webpage.
The broad area of my research is numerical analysis/computational mathematics. I work on the development, rigorous analysis and efficient implementation of computational algorithms for problems coming from physics and engineering.
I have worked on boundary and finite element and also on space-time methods for both steady state and and time-domain problems. These include wave scattering problems, both acoustic and electromagnetic, and Schroedinger equations. There has been a strong emphasis in my work on the development and analysis of fast methods for non-local problems. These include both boundary integral equations and non-local/fractional differential operators.
Further, I am active in the development and analysis of numerical eigenvalue computations and in computational complex analysis. Here I have worked on pseudospectral, finite element and multigrid methods.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 7 Affordable and Clean Energy
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Collaborations and top research areas from the last five years
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Runge–Kutta convolution quadrature for operators arising in wave propagation
Banjai, L., Lubich, C. & Melenk, J. M., 19 Apr 2011, In: Numerische Mathematik. 119, 1, p. 1-20 20 p.Research output: Contribution to journal › Article › peer-review
80 Link opens in a new tab Citations (Scopus) -
Numerical solution of exterior Maxwell problems by Galerkin BEM and Runge–Kutta convolution quadrature
Ballani, J., Banjai, L., Sauter, S. & Veit, A., 2013, In: Numerische Mathematik. 123, 4, p. 1-18 19 p.Research output: Contribution to journal › Article › peer-review
23 Link opens in a new tab Citations (Scopus) -
Generalized convolution quadrature based on the trapezoidal rule
Banjai, L. & Ferrari, M., 11 Mar 2026, (E-pub ahead of print) In: IMA Journal of Numerical Analysis.Research output: Contribution to journal › Article › peer-review
Open AccessFile -
A Modified Convolution Quadrature Combined with the Method of Fundamental Solutions and Galerkin BEM for Acoustic Scattering
Aldahham, E. & Banjai, L., Mar 2025, In: Communications in Computational Physics. 37, 3, p. 761-782 22 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile2 Downloads (Pure) -
Numerical analysis of a time-stepping method for the Westervelt equation with time-fractional damping
Baker, K., Banjai, L. & Ptashnyk, M., Nov 2024, In: Mathematics of Computation. 93, 350, p. 2711-2743 33 p.Research output: Contribution to journal › Article › peer-review
Open AccessFile9 Link opens in a new tab Citations (Scopus)66 Downloads (Pure)
Activities
- 3 Editorial activity
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IMA Journal of Numerical Analysis (Journal)
Banjai, L. (Editorial board member)
2026 → …Activity: Publication peer-review and editorial work › Editorial activity
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Journal of Scientific Computing (Journal)
Banjai, L. (Editorial board member)
2024 → …Activity: Publication peer-review and editorial work › Editorial activity
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SIAM Journal on Numerical Analysis (Journal)
Banjai, L. (Editorial board member)
2022 → …Activity: Publication peer-review and editorial work › Editorial activity