How to calculate scalar curvature, Ricci tensor and Christoffel symbols in Mathematica?
How do I make a plot using cylindrical coordinates?
How to add a vertical line to a plot?
Why should I avoid the For loop in Mathematica?
Calculating the normalization constant for a wavefunction
Plotting a Phase Portrait
How to perform a multi-peak fitting?
How to calculate scalar curvature, Ricci tensor and Christoffel symbols in Mathematica?
https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=8895
I am seeking a convenient and effective way to calculate such geometric quantities. I've used packages like TensoriaCalc , but they don't work at all time. Sometimes,... [symbolic] [physics] [tensors] [differential-geometry]
asked by Zoe Rowa https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1713
Score of 54 answered by Yi-Zen Chu https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4869
Score of 26 How do I make a plot using cylindrical coordinates? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=19076
I'm trying to plot a function of the form $z(r,\theta)$ where $r \in [0, R]$ for a finite R, $\theta \in [0,2\pi[$, and z is the third coordinate, a function of the first two. I couldn't find anything ... [plotting]
asked by Learning is a mess https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=5643
Score of 21 answered by whuber https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=91
Score of 33 How to add a vertical line to a plot? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=3561
In the plot below I would like to add two vertical lines at $x = \frac{\pi}{15} \pm \frac{1}{20}$. How can I do that? ... [plotting]
asked by sjdh https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=515
Score of 89 answered by Ajasja https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=745
Score of 104 Why should I avoid the For loop in Mathematica? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=134609
Some people advise against the use of For loops in Mathematica. Why? Should I heed this advice? What is wrong with For ? What ... [core-language] [coding-style] [faq]
asked by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12
Score of 120 answered by Szabolcs https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=12
Score of 128 Calculating the normalization constant for a wavefunction https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=99248
How can I compute the normalization constant for a quantum mechanics wave-function, like $\Psi(x) = N \exp(-\lambda x^2/2)$ by using Mathematica? (The normalization constant is $N$). [physics]
asked by infiniteNOP https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=35524
Score of 2 answered by Jason B. https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=9490
Score of 5 Plotting a Phase Portrait https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=14160
I'm trying to plot a phase portrait for the differential equation $$x'' - (1 - x^2) x' + x = 0.5 \cos(1.1 t)\,.$$ The primes are derivatives with respect to $t$. I've reduced this second order ODE to ... [plotting] [differential-equations]
asked by covertbob https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=4528
Score of 48 answered by David Slater https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1746
Score of 42 How to perform a multi-peak fitting? https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=26336
I am wondering how to implement the multi-peak detecting and fitting in Mathematica. Following is an example of fitting the data using three peaks (such that the data ~ peak1 + peak2 + peak3). The ... [fitting] [data] [peak-detection]
asked by Everett You https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=1389
Score of 58 answered by Silvia https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=17
Score of 57