Power Failure Today, Downtime

I take the unusual approach of hosting this blog and site, on a server, that is running on my personal computer at home. I don’t recommend that everybody do it this way; this is only how I do it. That makes the availability of my blog and site no better, than the reliability with which I can keep my PC running, as well as that, of my Internet connection.

Unfortunately, I experienced a brief power failure this morning, between 8h45 and 9h00. As a result, this site was down until about 9h40. I apologize for any inconvenience to my readers.

BTW, There have been remarkably few failures in the recent 3 months or so.



Hypothesizing the trigonometric functions of complex numbers and their inverses.

If one wanted to extend trigonometry to complex numbers, I think the following two worksheets would exemplify how that can be done:

Link to PDF File for Desktop Browsers

Link to EPUB2 File for Mobile Devices





My blog is back online.

This previous posting explained in advance that my electrical utility was planning a power-cut, which eventually caused my site and blog to go offline.

Actually, I shut down my computers the previous evening.

I’m happy to announce that the power cut took place within the predicted time interval, and that for the time being, I can consider my service as being back to normal. For that reason, the site and blog are also back up. :-)