Hi everyone
I'm currently trying to improve ring_series by adding the series expansion
of the Sine Integral.
I'm having some trouble with series inversion.
I have to use rs_series_inversion in order to perform some division. The
problem is that series inversion doesn't always work.
For example
I'm also wondering if the following behavior is right:
```
>>> Piecewise((1, x < 1), (2, Eq(x, 3) & (y < x)), (3, True)).integrate((x,
0, 3))
7
>>> Piecewise((1, x < 1), (2, y < 3), (3, True)).integrate((x, 0, 3))
Piecewise((5, (y >= -oo) & (y < 3)), (7, True))
```
In the first case, the 2nd con
The condition is an And, so it requires both to be true. Thus, it is
only 2 at one value, x=3, which means it doesn't contribute to the
integral.
I'm not really sure how to interpret the Dirac Delta integral. It
seems to me that it should be the same as integrate(DiracDelta(x), (x,
0, 0)), which g
By definition (e.g.,
https://en.wikipedia.org/wiki/Dirac_delta_function#As_a_measure),
DiracDelta would have integral one over any set that contains 0, even
if that set has only one point.
So one has to ask, when we integrate over (x, a, b), do we mean closed
interval [a, b], open (a, b), or half-o
