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Et harum scientiarum porta et clavis est Mathematica

Roger Bacon (~1214-1292)

$$ \sum_{n=1}^\infty\frac{1}{n^z} = \prod_{p \text{ prime}} \frac{1}{1-p^{-z}} $$


9h
awarded  Enlightened
14h
comment Phase portrait on a cylinder
This may be interesting Basins of Attraction.
1d
reviewed Looks OK How to use Expected values in symbolic solving
1d
revised Problem on limit involving complex numbers
added 1398 characters in body
1d
comment Problem on limit involving complex numbers
Answers to this question are slightly related: Convergence and value of a complex power series.
1d
answered Problem on limit involving complex numbers
1d
reviewed No Action Needed Difference Equation System constructed with SetDelayed: How I can set Non-exploding break?
1d
reviewed No Action Needed Making a list of rules form the list of elements
1d
comment The Riemann Zeta Function From Parametric to 3D
@Pierre If you find something wrong it woluld be right to point out the problem otherwise such arguments are inappropriate. Try to read once more the linked answers and if you provide an improvemnet I could help you with your question as well. Nevertheless I'm still not sure what you are looking for and there are others who don't understand what you are trying to achive. I'll be able to help on the thursday evening (only if you improve your question and they open it).
2d
reviewed Leave Closed The Riemann Zeta Function From Parametric to 3D
2d
comment Problem with solving an equation
Just use it this way Solve[Log[x^2 + 5] + 1/2 x + 1 == 0, x, Reals] and if you find some doubts read e.g. Can Reduce really not solve for x here? and How do I work with Root objects?.
2d
comment Second order differential equation with boundary conditions solving repeatedly
I guess you want an iteration method as in the proof of e.g. Picard's theorem rather thant recurssion. Unfortunately I have no time for answering any questions.
2d
comment The Riemann Zeta Function From Parametric to 3D
Your question is completely unclear. You don't use a correct Mathematica syntax. If you are looking for visualisation of the Riemann Zeta see e.g. When does the real part of Zeta vanish on the critical line? or Why do these two different zetas produce the same value?.
2d
reviewed Leave Closed Derivatives of functions with arbitrary number of variables?
2d
reviewed No Action Needed how to diagonalize this symbolic matrix?
Oct
27
comment Integration over a (non-parametric) curve defined by indicator function
In principle this question is a duplicate of Finding length of intersection of two surfaces
Oct
27
reviewed No Action Needed Does existence and uniqueness of a classical solution impose uniqueness of weak solutions to a pde?
Oct
24
reviewed No Action Needed Number of sequences with a certain condition
Oct
24
comment HDF5 and complex numbers
This question pointed out a reverse problem although not with exporting. I guess these problems are related somehow.
Oct
24
comment Closed solutions for `FindRoot`, no solutions for `Reduce` or `Solve`
Highlight C and press F1.