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Domain > hbelabs.com
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More information on this domain is in
AlienVault OTX
Is this malicious?
Yes
No
DNS Resolutions
Date
IP Address
2025-01-17
45.79.107.26
(
ClassC
)
Port 443
HTTP/1.1 200 OKDate: Sun, 02 Jun 2024 09:35:49 GMTServer: Apache/2.4.52 (Ubuntu)Accept-Ranges: bytesVary: Accept-EncodingContent-Length: 5413Content-Type: text/html html> head> script typetext/x-mathjax-config>MathJax.Hub.Config({ tex2jax: {inlineMath: $,$, \(,\)}});/script>script typetext/javascript srchttps://cdn.mathjax.org/mathjax/latest/MathJax.js?configTeX-AMS-MML_HTMLorMML>/script> /head> body>h2>HBELABS.COM/h2>hr>!--a hreftrump.html target_blank>The Real Donald Trump and the Coronavirus Pandemic/a>br> hr-->table border1 width1 cellpadding8 cellspacing0 alignright>tr>td>a hrefimages/pent.D81917.png target_blank>img srcimages/pent.D81917.TN.png>/a>tr>td>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 $lambda1,000,126.718$; which is the 81,917-th distinct Dirichlet eigenvalue. Click on it for a high resolution nodal pattern (20 pixels per wavelength)./table>!--table border1 width1 cellpadding8 cellspacing0 alignright>tr>td>a hrefimages/DS1396h.png target_blank>img srcimages/DS1396h.tn.png>/a>tr>td>This is the 1396th symmetric Dirichlet eigenfunction in the(unit-edged) regular pentagon. Its also the 8130th Dirichleteigenvalue for that shape, which is the first one over 100,000. Its value, accurate to about 300 digits is a hrefhelmholtz/DS1396.html>100001.2819..../a>.(My currentproject is going ten times higher, up to 1,000,000.)/table-->h3>Personal Website of Bob Jones/h3>img srcimages/bobj.png alignleft hspace20 vspace10>Robert Stephen Jonesbr>a hrefhttp://orcid.org/0000-0003-3374-3540 target_blank>ORCID/a>br>rsjones7 at yahoo dot comhr>I am interested in calculating eigenvalues of the Laplacian fortwo-dimensional polygons, mostly for the regular pentagon. My projectconsists of two main parts. One is to calculate very many eigenvalues(over 160,000 of them) and the corresponding eigenfunctions, the otheris to calculate very precise eigenvalues (at least 1000 digits).hr>ul> li>a hrefmushroom/index.html>One-hundred-digit results for the Dirichlet eigenvalues of the Bunimovich mushroom/a> (T
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