acm - an acm publication


Ubiquity symposium 'What is Computation?'
The evolution of computation

Ubiquity, Volume 2010 Issue November, November 2010 | BY Peter Wegner 


Full citation in the ACM Digital Library  | PDF

In this second article in the ACM Ubiquity symposium on 'What is computation?' Peter Wegner provides a history of the evolution of comptuation. --Editor | 526: Invalid SSL certificate

Error 526 Ray ID: 539ac3158f9fe865 • 2019-11-22 12:03:46 UTC

Invalid SSL certificate








What happened?

The origin web server does not have a valid SSL certificate.

What can I do?

If you're a visitor of this website:

Please try again in a few minutes.

If you're the owner of this website:

The SSL certificate presented by the server did not pass validation. This could indicate an expired SSL certificate or a certificate that does not include the requested domain name. Please contact your hosting provider to ensure that an up-to-date and valid SSL certificate issued by a Certificate Authority is configured for this domain name on the origin server. Additional troubleshooting information here.


As usual, Peter Wegner wrote a vary interesting article. 2 suggestions. (1) As I am sure that the article will generate follow-up comments, consider starting a thread for each such article. Of course, we could comment directly to Peter, but this might generate more email than he would want. (2) Follow publication convention and give publishing data on books and articles referenced in these essays. I know, I can Google the titles, but giving the references is easier. Dick Swenson

��� Dick swenson, Tue, 23 Nov 2010 17:00:59 UTC

Leave this field empty