Found 191 Documents (Results 1–100)
Approximation of continuous functions by classical sincs and values of operators \(C_\lambda \). (English) Zbl 1539.41025
Reviewer: Hang Lau (Montréal)
Numerical evaluation of oscillatory integrals via automated steepest descent contour deformation. (English) Zbl 07829512
Generalization of the fast Fourier transform with a constant structure. (English. Russian original) Zbl 07752268
Comput. Math. Math. Phys. 63, No. 8, 1371-1380 (2023); translation from Zh. Vychisl. Mat. Mat. Fiz. 63, No. 8, 1241-1250 (2023).
On a method for solving a mixed boundary value problem for a parabolic equation using modified sinc-approximation operators. (English. Russian original) Zbl 07752260
Comput. Math. Math. Phys. 63, No. 7, 1264-1284 (2023); translation from Zh. Vychisl. Mat. Mat. Fiz. 63, No. 7, 1156-1176 (2023).
Analysis of curvature approximations via covariant curl and incompatibility for Regge metrics. (English) Zbl 1525.65121
Reviewer: Xiaodi Zhang (Zhengzhou)
Finite volume approximation of a class of two-dimensional parabolic equations with discontinuous and highly oscillating coefficients. (English) Zbl 1538.65305
Analysis of directional higher order jump discontinuities with trigonometric shearlets. (English) Zbl 1530.42054
A posteriori identities for measures of deviation from exact solutions of nonlinear boundary value problems. (English. Russian original) Zbl 1519.35040
Comput. Math. Math. Phys. 63, No. 6, 934-956 (2023); translation from Zh. Vychisl. Mat. Mat. Fiz. 63, No. 6, 896-919 (2023).
Higher-order time domain boundary elements for elastodynamics: graded meshes and hp versions. (English) Zbl 1527.65091
Reviewer: Weizhong Dai (Ruston)
The splitting algorithms by Ryu, by Malitsky-Tam, and by Campoy applied to normal cones of linear subspaces converge strongly to the projection onto the intersection. (English) Zbl 1532.41029
Reviewer: Ravindra Kishor Bisht (Pune)
Euler-Maclaurin summation formula on polytopes and expansions in multivariate Bernoulli polynomials. (English) Zbl 1529.11038
Improved bounds on the gain coefficients for digital nets in prime power base. (English) Zbl 1518.65005
A space-time quasi-Trefftz DG method for the wave equation with piecewise-smooth coefficients. (English) Zbl 1509.65099
Reviewer: Bülent Karasözen (Ankara)
Numerical computation of a preimage domain for an infinite strip with rectilinear slits. (English) Zbl 1508.30018
Variational approximation in modular spaces by using finite element method approach. (English) Zbl 07637647
Space-time methods for time-dependent partial differential equations. Abstracts from the workshop held February 6–12, 2022. (English) Zbl 1506.00088
Acute geodesic triangulations of manifolds. (English) Zbl 1504.57044
Ohshika, Ken’ichi (ed.) et al., In the tradition of Thurston II. Geometry and groups. Cham: Springer. 261-291 (2022).
Asymptotic lattices, good labellings, and the rotation number for quantum integrable systems. (English) Zbl 1513.81071
Error estimates for FE-BE coupling of scattering of waves in the time domain. (English) Zbl 1497.65153
A quasi-optimal factorization preconditioner for periodic Schrödinger eigenstates in anisotropically expanding domains. (English) Zbl 07589941
Optimal randomized quadrature for weighted Sobolev and Besov classes with the Jacobi weight on the ball. (English) Zbl 07583925
Error identities for the reaction-convection-diffusion problem and applications to a posteriori error control. (English) Zbl 1502.65092
Crouzeix-Raviart finite element method for non-autonomous variational problems with Lavrentiev gap. (English) Zbl 1501.65105
Numerical integration and discrepancy under smoothness assumption and without it. (English) Zbl 1490.65035
Multidimensional analogues of the Euler-Maclaurin summation formula and the Borel transform of power series. (Russian. English summary) Zbl 1480.65006
Modeling regular textures in images using the Radon transform. (Russian. English summary) Zbl 1507.68333
Sib. Zh. Ind. Mat. 24, No. 2, 62-76 (2021); translation in J. Appl. Ind. Math. 15, No. 2, 223-233 (2021).
On the error of approximation by RBF neural networks with two hidden nodes. (English) Zbl 1498.41016
Infeasibility and error bound imply finite convergence of alternating projections. (English) Zbl 1507.47126
Asymptotics of the Lebesgue constants for bivariate approximation processes. (English) Zbl 1510.42013
Similarity solutions for Keller-Segel model with fractional diffusion of cells. (English) Zbl 1471.35307
Commuting integral and differential operators and the master symmetries of the Korteweg-de Vries equation. (English) Zbl 07375642
Numerical performance of optimized Frolov lattices in tensor product reproducing kernel Sobolev spaces. (English) Zbl 1480.46037
On the method of reflections. (English) Zbl 1478.65140
Quantum Lorentz degrees of polynomials and a Pólya theorem for polynomials positive on \(q\)-lattices. (English) Zbl 1484.65034
Efficient estimation of roots from the field of fractional power series of a given polynomial in nonzero characteristic. (English. Russian original) Zbl 1515.65119
J. Math. Sci., New York 255, No. 2, 149-154 (2021); translation from Zap. Nauchn. Semin. POMI 498, 64-74 (2020).
MSC:
65H05
Optimal cubature formulas on classes of periodic functions in several variables. (English) Zbl 1467.65018
Proc. Steklov Inst. Math. 312, 16-36 (2021) and Tr. Mat. Inst. Steklova 312, 22-42 (2021).
Spectral and threshold analysis of a small rank perturbation of the discrete Laplacian. (English) Zbl 1473.81071
Sufficient conditions for a multidimensional system of periodic wavelets to be a frame. (English. Russian original) Zbl 1453.42032
J. Math. Sci., New York 251, No. 2, 190-199 (2020); translation from Zap. Nauchn. Semin. POMI 480, 48-61 (2019).
Reviewer: Ghanshyam Bhatt (Nashville)
Gaussian functions combined with Kolmogorov’s theorem as applied to approximation of functions of several variables. (English. Russian original) Zbl 1475.41012
Comput. Math. Math. Phys. 60, No. 5, 766-782 (2020); translation from Zh. Vychisl. Mat. Mat. Fiz. 60, No. 5, 784-801 (2020).
Reviewer: Aurelian Bejancu (Safat)
Numerical approximation by the method of lines with finite-volume approach of a solute transport equation in periodic heterogeneous porous medium. (English) Zbl 1463.65260
MSC:
65M08
Discrepancy of digital sequences: new results on a classical QMC topic. (English) Zbl 07240090
Tuffin, Bruno (ed.) et al., Monte Carlo and quasi-Monte Carlo methods. MCQMC 2018. Proceedings of the 13th international conference on Monte Carlo and quasi-Monte Carlo methods in scientific computing, Rennes, France, July 1–6, 2018. Cham: Springer. Springer Proc. Math. Stat. 324, 81-103 (2020).
MSC:
65C05
On the asymptotics of eigenvalues of a third-order differential operator. (English. Russian original) Zbl 07222199
St. Petersbg. Math. J. 31, No. 4, 585-606 (2020); translation from Algebra Anal. 31, No. 4, 16-47 (2019).
A posteriori estimates for the stationary Stokes problem in exterior domains. (English) Zbl 1437.35275
St. Petersbg. Math. J. 31, No. 3, 533-555 (2020) and Algebra Anal. 31, No. 3, 184-215 (2019).
Mathematical analysis of transmission properties of electromagnetic meta-materials. (English) Zbl 1441.35029
Reviewer: Paolo Musolino (Padova)
Approximation of solutions to nonstationary Stokes system. (English. Russian original) Zbl 1435.65160
J. Math. Sci., New York 244, No. 3, 436-450 (2020); translation from Probl. Mat. Anal. 100, 71-82 (2019).
Some regularity and convergence results for parabolic Hamilton-Jacobi-Bellman equations in bounded domains. (English) Zbl 1439.35292
Computation of the LBB constant for the Stokes equation with a least-squares finite element method. (English) Zbl 1437.76024
Reviewer: Noureddine Daili (Sétif)
2D elastic plane-wave diffraction by a stress-free wedge of arbitrary angle. (English) Zbl 1452.65367
Connections between numerical integration, discrepancy, dispersion, and universal discretization. (English) Zbl 1516.65019
\(hp\)-version time domain boundary elements for the wave equation on quasi-uniform meshes. (English) Zbl 1441.65074
MSC:
65M38
Extremal cubature formulas for anisotropic classes. (Russian. English summary) Zbl 1485.65020
Quasi-projection operators with applications to differential-difference expansions. (English) Zbl 1433.41010
Interpolating \(m\)-refinable functions with compact support: the second generation class. (English) Zbl 1428.41004
Discriminants of classical quasi-orthogonal polynomials with application to Diophantine equations. (English) Zbl 1429.33016
Reviewer: Marcel G. de Bruin (Heemstede)
Finite element approximation of the Isaacs equation. (English) Zbl 1433.65311
Reviewer: Ljiljana Teofanov (Novi Sad)
On the honeycomb conjecture for Robin Laplacian eigenvalues. (English) Zbl 1414.49044
Reviewer: Denis Borisov (Ufa)
Numerical treatment to a non-local parabolic free boundary problem arising in financial bubbles. (English) Zbl 1408.35225
Convergence of \(\mathrm{dG}(1)\) in elastoplastic evolution. (English) Zbl 1433.65283
Reviewer: Temur A. Jangveladze (Tbilisi)
Residue integrals and Waring’s formulas for algebraic or even transcendental systems. (English) Zbl 1406.65036
Reviewer: Anton Iliev (Plovdiv)
Localized forms of the LBB condition and a posteriori estimates for incompressible media problems. (English) Zbl 1482.76100
The non-locality of Markov chain approximations to two-dimensional diffusions. (English) Zbl 1484.60087
Modified Steklov functions and numerical differentiation formulas. (English. Russian original) Zbl 07000153
J. Math. Sci., New York 235, No. 2, 138-153 (2018); translation from Probl. Mat. Anal. 94, 21-34 (2018).
Variational approximation of functionals defined on 1-dimensional connected sets: the planar case. (English) Zbl 1404.49006
A time-dependent direct sampling method for recovering moving potentials in a heat equation. (English) Zbl 1471.35326
Convergence rate of an explicit finite difference scheme for a credit rating migration problem. (English) Zbl 1395.65049
Reviewer: Nikolay Kyurkchiev (Plovdiv)
On the discretization of some nonlinear Fokker-Planck-Kolmogorov equations and applications. (English) Zbl 1394.35511
Integrated semigroups and \(C\)-semigroups and their applications. (English. Russian original) Zbl 1471.47030
J. Math. Sci., New York 230, No. 4, 513-646 (2018); translation from Itogi Nauki Tekh., Ser. Sovrem. Mat. Prilozh., Temat. Obz. 131 (2017).
Reviewer: Nikita V. Artamonov (Moskva)
Functional difference equations in the problem on the forced oscillations of a fluid in an infinite pool with conical bottom. (English. Russian original) Zbl 1387.35499
St. Petersbg. Math. J. 29, No. 2, 267-287 (2018); translation from Algebra Anal. 29, No. 2, 59-88 (2017).
Lattice-based integration algorithms: Kronecker sequences and rank-1 lattices. (English) Zbl 1385.65003
Reviewer: Rózsa Horváth-Bokor (Budakalász)
Convergence properties of dynamic string-averaging projection methods in the presence of perturbations. (English) Zbl 1459.47023
An algebraic-geometric method for computing Zolotarev polynomials. (English) Zbl 1458.34009
Burr, Michael (ed.), Proceedings of the 42nd international symposium on symbolic and algebraic computation, ISSAC 2017, Kaiserslautern, Germany, July 25–28, 2017. New York, NY: Association for Computing Machinery (ACM). 173-180 (2017).
Bound states in weakly deformed waveguides: numerical versus analytical results. (English) Zbl 1385.81023
Numerical analysis of strongly nonlinear PDEs. (English) Zbl 1381.65092
Reviewer: Rolf Dieter Grigorieff (Berlin)
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