Leon Simons book is pretty readable, this is good stuff

oh damn, got 100% @daminark

went around the outside, finally managed to catch my tail, and slurp

Nice

(it came up with little fireworks and everything once I did that, lol)

Oh yeah it does that

I posted a problem and my solution to it. I got several fine responses and now I have the right solution. I am wondering, what is the level of difficulty of the question? math.stackexchange.com/questions/2366451/…

Hey @PVAL

hey daminark

How's it going?

@Astyx DC

@daminark I hurt my foot running quite badly and can't walk very far without pain.

@Daminark DC ?

Washington? DC? Nothing?

Oh sorry

Later

Kk

@PVAL Oh shit, hopefully nothing got broken?

@Daminark Don't think so. I've had this issue years ago and had x-rays and nothing was broken.

Like tmorrow

Ah, alright. Well, wish you a speedy recovery

So do I

Weird math of the day (though I do understand it)

I've got a power series of the form $\sum_{n=0}^\infty \frac{\Gamma(1/4+n/2)}{n!} (-x)^n$

It might look a little strange, but this has infinite radius of convergence per the ratio test so everything would seem to be fine.

However, Mathematica yields some weird behavior on the negative real axis.

In particular, if you plug $x=-1$ directly into the above and sum, Mathematica yields roughly 5.5227.

But you can instead allow Mathematica to compute the sum as a function of $x$, do a FullSimplify to make things look nicer, and only then plug in $x=-1$. If you do that, you get 2.73685i as the output!

Weirder still, this only happens if you do FullSimplify and does not happen if you only do Simplify.