## Bratislava

My first day in Bratislava was pretty rough.

The first disaster was that related to my luggage falling from overhead.  Not only did I get a bruise on my eye, I broke my glasses.  I had recently switched back to glasses because my contacts had been causing really bad headaches.  And while I was strongly resistant to buying *those* particular frames, they really grew one me.  So, I’m in a city and should be conducting research, but I can’t see.  At least I have one contact with me 🙂

The second ‘adventure’ was that I was ticketed 50 Euro! I thought you paid for your bus ticket on the bus.  I had my money out ready to pay; except, that machine was only for validation.  As soon as the doors closed, I got a ticket!  I was totally embarassed!

That said, research has been good, and I like my office.  Here are some pics for fun!

## Constant Vorticity – The Saga Continues…

The above picture shows the real part of the growth rate $\lambda$ vs. the Floquet parameter $\mu$ for increasing truncation of the Floquet/Fourier/Hill matrix.

After a lengthy discussion with Richard Kollar, we have agreed that there seem to be two separate issues here.  The first is that one must be careful when restricting the Floquet Multiplier $\mu \in \left[0,\frac{1}{2}\right]$ in conjunction with the size of the truncated matrix for the Fourier/Floquet/Hill method.  The second is that there is still some other type of instability that may be present (the “moving” instability).

Continue reading “Constant Vorticity – The Saga Continues…”