## 📖 5.0% done with Complex Analysis by Elias M. Stein & Rami Shakarchi

📖 5.0% done with Complex Analysis by Elias M. Stein & Rami Shakarchi

A nice beginning overview of where they’re going and philosophy of the book. Makes the subject sound beautiful and wondrous, though they do use the word ‘miraculous’ which is overstepping a bit in almost any math book whose history is over a century old.

Their opening motivation for why complex instead of just real:

However, everything changes drastically if we make a natural, but misleadingly simple-looking assumption on $f:$ that it is differentiable in the complex sense. This condition is called holomorphicity, and it shapes most of the theory discussed in this book.

We shall start our study with some general characteristic properties of holomorphic functions, which are subsumed by three rather miraculous facts:

1. Contour integration: If $f$ is holomorphic in $\Omega$, then for appropriate closed paths in $\Omega$

$\int\limits_\gamma f(z)\,\mathrm{d}z = 0.$

2. Regularity: If $f$ is holomorphic, then $f$ is indefinitely differentiable.
3. Analytic continuation: If $f$ and $g$ are holomorphic functions in $\Omega$ which are equal in an arbitrarily small disc in $\Omega$, then $f = g$ everywhere in $\Omega$.

This far into both books, I think I’m enjoying the elegance of Stein/Shakarchi better than Ahlfors.

## 📖 14.0% done with Carioca Fletch (Fletch #7) by Gregory McDonald

📖 14.0% done with Carioca Fletch (Fletch #7) by Gregory McDonald

An interesting start with a nice dash of the cultural part of what it means to be a Brazilian to set the stage of what is to come in the book. The reader is nicely made to feel the cultural clash of American and Brazilian along with the frustration Fletch surely feels.

## 🔖 Want to read: Carioca Fletch (Fletch #7) by Gregory McDonald

🔖 Want to read: Carioca Fletch (Fletch #7) by Gregory McDonald

The Rio Olympics reminded me that I’d gotten Carioca Fletch to read back in the 80’s and never got around to it, so I thought I’d come back and revisit the series.

## Failed attempt to OwnYourCheckin

The goal of this post was to own my own checkins via foursquare. Alas there’s an issue(s) with the code somewhere, so for those who are seeing this, I’m updating it so you’ll know what happened to the intended post.

If you’re game to try it, give it a shot at https://ownyourcheckin.wirres.net