Tag: numerics

116 Why are numeric division and subtraction not handled better in Mathematica? 2014-01-22T17:34:59.797

83 Why round to even integers? 2012-02-21T22:45:19.533

80 Updating Wagon's FindAllCrossings2D[] function 2012-01-19T14:17:59.047

73 Numerically solving Helmholtz equation in 2D for arbitrary shapes 2014-07-31T12:51:01.943

66 When can I assume that all decimal digits returned by Mathematica are provably correct? 2013-06-24T05:11:35.270

60 Can Mathematica propose an exact value based on an approximate one? 2012-01-17T21:42:06.070

52 Adaptive sampling for slow to compute functions in 2D 2012-01-18T21:10:43.893

50 Finding real roots of negative numbers (for example, $\sqrt[3]{-8}$) 2012-04-03T21:19:03.947

50 Is manual adjustment of AccuracyGoal and PrecisionGoal useless? 2016-06-12T12:11:14.450

45 Funny behaviour when plotting a polynomial of high degree and large coefficients 2012-03-18T02:09:44.477

45 About multi-root search in Mathematica for transcendental equations 2012-05-17T07:52:59.270

43 Fast Spherical Harmonics radiative transfer 2012-09-18T10:43:16.673

43 Understanding differences between Maple and Mathematica in examples picked by Maplesoft 2014-09-19T15:28:58.950

42 Identifying critical points/lines of 2/3D image/cubes 2012-08-27T21:28:56.507

42 How to work with Experimental`NumericalFunction? 2014-03-06T14:25:58.943

41 How to compare power towers in Mathematica? 2013-05-07T20:10:50.070

40 How can I define a new symbolic constant like Pi? 2016-10-11T13:49:44.060

39 Efficient Langevin Equation Solver 2012-07-26T15:36:28.150

39 Is there a difference between Divide[a,b] and a/b? 2013-12-21T01:42:24.620

38 Numerics with Mathematica 2012-02-24T15:29:50.423

38 Meaning of backtick in floating-point literal 2012-03-14T00:28:33.500

38 Is it possible to make Mathematica reformulate an expression in a more numerically stable way? 2012-05-25T14:40:08.343

38 AccuracyGoal, PrecisionGoal, WorkingPrecision and NDSolve 2012-08-06T16:41:55.730

37 How to implement custom integration rules for use by NIntegrate? 2016-06-13T14:58:10.297

36 Global precision setting 2012-06-04T19:46:19.167

35 How to flush machine underflows to zero and prevent conversion to arbitrary precision? 2013-05-08T10:38:19.487

34 GroupBy twice gives different results 2015-11-22T12:23:17.380

33 Is MathieuC for moderately large imaginary arguments broken? 2015-05-09T17:06:19.853

33 Why is Plus so much slower than Total? 2017-05-01T21:47:41.460

32 How to use NDSolve to track equilibrium? 2012-01-22T14:37:54.197

32 How to fit 3 data sets to a model of 4 differential equations? 2013-07-12T11:22:02.053

31 How can I differentiate numerically? 2012-11-11T17:41:23.817

31 Symbolic derivatives are being calculated numerically 2011-06-13T02:17:26.920

31 Numerical solution of coupled ODEs with boundary conditions 2013-10-06T15:33:37.460

30 Elegant high precision `log1p`? 2013-12-20T01:00:33.993

29 Computing polynomial eigenvalues in Mathematica 2012-08-24T14:15:14.447

27 What determines the value of $MaxNumber? 2012-01-22T20:18:18.873

27 Can Mathematica Handle Open Intervals? Interval complements? 2012-10-01T02:41:39.143

27 How to improve performance of BesselJ to the level of GSL? 2015-06-02T10:40:20.277

27 What do the X and Y axis stand for in the Fourier transform domain? 2015-06-04T11:00:28.197

27 FindMinimum doesn't increase step size when necessary 2016-05-30T19:46:24.467

26 Different floating-point numbers equal? 2015-03-09T23:23:43.370

25 Obtain approximate Hessian using FindMinimum 2012-03-19T19:09:31.010

25 How to determine BLAS/LAPACK implementation used internally for numerical matrix operations? 2014-02-08T17:42:55.333

25 Exponential fitting - isn't actually a BUG there? 2016-01-27T19:23:05.450

25 How does Internal`CompareNumeric work? 2017-03-20T13:15:41.843

25 Mathematica vs. MATLAB philosophy 2020-07-18T12:38:56.497

24 Is there an NDSolve`ProcessEquations analog for NIntegrate? 2012-01-18T18:45:09.217

24 Annoying display truncation of numerical results 2012-03-30T23:00:14.903

24 Optimizing a Numerical Laplace Equation Solver 2013-04-19T09:49:08.257

24 Real Numbers in the Wolfram Language 2014-12-22T15:05:28.203

23 Solving a Volterra integral equation numerically 2012-04-24T01:58:38.320

23 2D Heat equation: inconsistent boundary and initial conditions 2013-03-06T03:00:08.430

23 How to solve ODE with boundary at infinity 2014-08-12T23:48:28.117

23 Numerical inverse Laplace-Hankel transform 2016-04-21T16:29:54.330

23 Which second arguments is VectorQ/MatrixQ/ArrayQ optimized for? 2018-10-23T14:37:42.350

22 BitShiftRight produces incorrect results in Version 10 2014-07-30T20:25:33.373

21 How to discretize a nonlinear PDE fast? 2012-09-11T13:03:01.880

21 How to create internally optimized expression for computing with high WorkingPrecision? 2013-05-18T08:50:29.803

21 Faster binary Hamming weight for big integers? 2015-07-03T21:14:20.727

21 More efficient method to compute moments of the Johnson $S_B$ distribution 2015-10-24T10:55:52.130

21 NDSolve uses different difference order for different spatial derivative when solving PDE 2016-10-20T06:52:22.657

20 The difference between 0. and 0 2012-06-18T19:49:43.090

20 Higher order periodic interpolation (curve fitting) 2012-09-05T20:02:50.167

20 NDSolve with Euler method 2012-10-11T20:06:34.890

20 Eisenstein Series in Mathematica? 2015-07-29T14:33:57.393

20 How to implement custom NIntegrate integration strategies? 2016-06-20T22:10:39.507

20 How are Accuracy and Precision related Mathematica for a given operation? 2017-09-19T17:41:52.657

20 Inverting differential equation using finite element methods 2020-03-21T16:22:57.700

19 Numerical underflow for a scaled error function 2012-04-03T08:28:53.813

19 Is this the most efficient way to round approximate integers to integers while leaving other Reals untouched? 2012-06-26T07:54:08.170

19 How do I find all the solutions of three simultaneous equations within a given box? 2012-10-01T13:12:24.217

19 Dual complex integral over implicit path using contour plot 2012-10-28T16:05:42.760

19 How to remove duplicates from set of machine precision 2D points? 2013-03-25T21:51:47.380

19 What are the algorithm details of FindRoot? 2013-11-26T08:15:26.223

19 How can I mend this broken heart? 2014-07-26T05:32:28.520

19 New General::munfl error and loss of precision 2018-04-04T15:06:19.883

18 How do you round numbers so that it affects computation? 2012-07-04T12:26:04.197

18 Determining the default Method used in optimization and root-finding algorithms 2012-11-15T13:05:17.820

18 Creating a 3D List Line Plot From Discrete Points 2014-06-01T11:24:39.150

18 Solve differential equation using a integral form boundary condition 2015-06-19T20:53:09.270

17 CompiledFunction returns machine numbers smaller than $MinMachineNumber 2013-11-25T14:32:32.500

17 Implement the Bisection algorithm elegantly and easily 2014-12-28T13:51:17.833

17 Why is (-1.)^2. a complex number 2015-01-13T22:34:53.990

17 Piecewise imposes internal boundaries in NDSolve - is this expected? 2015-11-05T21:32:25.490

17 periodic boundary conditions and NDEigensystem 2015-12-05T21:31:46.323

17 What can one do with extremely stiff problem in NDSolve? 2016-04-17T10:24:35.597

17 How to improve this plot? 2016-10-23T07:42:28.460

17 Mathematica thinks (-1)^n is non-real 2018-02-24T23:20:04.037

16 Combined numerical minimization and maximization 2012-01-20T09:09:31.550

16 How to guarantee that NDSolve correctly detects abrupt changes in parameters? 2012-01-21T16:33:06.160

16 Parallelizing Numerical Integration in Mathematica 2012-02-10T23:06:05.997

16 Finding a fit to a multi-dimensioned function 2012-05-09T03:56:51.230

16 How to compute the inverse CDF of HyperbolicDistribution properly? 2012-10-29T03:23:31.513

16 Numerical partial derivative 2013-03-30T16:33:35.660

16 Computation of Hankel Transform using FFT (Fourier) 2013-06-01T08:27:02.870

16 Why is my data 10 times slower than random data when doing matrix multiplication 2015-01-09T04:11:08.417

16 Does Mathematica have an equivalent of C's nextafter? 2015-05-24T04:43:17.660

16 How does Plus work on machine precision Real arguments? 2016-01-10T21:10:30.250