## HBELABS.COM

 This is the 13,532-nd antisymmetric Dirichlet (136,519-th Dirichlet) eigenfunction in the (unit-edged) regular pentagon. It has about about 250 wavelengths across the pentagon. Its eigenvalue is about $\lambda=1,000,126.718$; which is the 81,917-th distinct Dirichlet eigenvalue. Click on it for a high resolution nodal pattern (20 pixels per wavelength).

### Personal Website of Bob Jones

Robert Stephen Jones
ORCID
rsjones7 at yahoo dot com
I am interested in calculating eigenvalues of the Laplacian for two-dimensional polygons, mostly for the regular pentagon. My project consists of two main parts. One is to calculate very many eigenvalues (over 160,000 of them) and the corresponding eigenfunctions, the other is to calculate very precise eigenvalues (at least 1000 digits).

ORCID: 0000-0003-3374-3540
My orcid.org QR:

### Play Boggle

Play boggle, the word game. This is me practicing server-side scripting in perl.

### Configurations

• Synergy: lightdm on lubuntu 16.04 or 14.04
This is useful if I have two computers sitting next to each other, with two monitors, but I only want to use one keyboard and one mouse to control them both. It sets up synergy before logging into Lubuntu.
• Reverse Tunnels
Quite often, it becomes convenient or necessary to set up reverse tunnels to access any of my computers from anywhere else on the Internet, with even the most hostile intervening network (like the Internet itself), and with only one publicly accessible computer.