What is the fastest method to set the diagonals of a matrix to 1?
Number of significant digits in uncertainty of Around
IntegrateChangeVariables producing incorrect result
JUST SAYING puzzle
CRAZY EIGHTS puzzle
Eigendecomposition of a matrix with a variable
What is an appropriate setting in NDSolve to get feedback about the progress of a long computation?
What is the fastest method to set the diagonals of a matrix to 1?
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I am trying to replace the zeros along diagonal of a distance matrix to a list of constants. In this case, a diagonal of 1's. It appears that the LinearAlgebra ... [performance-tuning] [replacement] [functional-style]
asked by Craig Carter https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12461 Score of
18 answered by Jacob Akkerboom https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4330
Score of 14 Number of significant digits in uncertainty of Around https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270438
Around[100.123456, 0.12] gives 100.12ś0.12 But Around[100.123456, 0.42] gives ... [around]
asked by matheorem https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4742 Score of
9 answered by rhermans https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=10397
Score of 6 IntegrateChangeVariables producing incorrect result https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270358
Consider the simple quadratic function: ClearAll[f]; f[x_]:=x^2; Now let's set up the two identical integrals: ... [calculus-and-analysis] [bugs] [version-13.1]
asked by user13892 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=13892 Score
of 9 answered by Nasser https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=70
Score of 9 JUST SAYING puzzle https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270221
The Sunday New York Times magazine has a new puzzle (June 26, 2022), JUST SAYING by Will Shortz, with the following rules: Change one letter in each word to spell a new word. Then arrange the new ... [string-manipulation] [puzzle] [dictionary]
asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 Score
of 9 answered by Ben Izd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77079
Score of 12 CRAZY EIGHTS puzzle https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270360
The Sunday New York Times magazine has a puzzle, CRAZY EIGHTS such as this: The goal is to fill in the $4 \times 4$ unfilled squares with letters to make valid 8-letter words reading both ... [puzzle] [dictionary]
asked by David G. Stork https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9735 Score
of 8 answered by Ben Izd https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77079
Score of 13 Eigendecomposition of a matrix with a variable https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=270369
I have an issue with a decomposition of a matrix $B$ that is positive semidefinite and that depends on a parameter $x$. Writing $\lambda_i\geq0$ the eigenvalues and $\psi_i$ the corresponding ... [matrix] [linear-algebra] [eigenvalues]
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8 answered by user293787 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=85954
Score of 11 What is an appropriate setting in NDSolve to get feedback about the progress of a long computation?
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Often in computation with an NDSolve-type solver, one hopes to know about its progress. To this end, I am using StepMonitor as follows, ... [numerical-integration] [monitoring]
asked by jsxs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=40024 Score of 8 answered by Michael E2 https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4999
Score of 9