Recent content by jedishrfu

Happy Thanksgiving! After Thanksgiving Day, check the weather as a major storm will be sweeping across the US from west to east with freezing temps, snow, sleet and ice in parts and rain in other parts further south. CNN has the details...

Check AbeBooks.com It's a used bookseller marketplace where I've found several out of print books for reasonable prices. Here’s volume 4, 7, 8, but no 9 https://www.abebooks.com/servlet/SearchResults?kn=L%20d%20landau%20volume%204&ref_=ds_ac_d_19&sts=t

When I first tried Python in the early days, I had given up on Perl. I sometimes used tab and sometimes used space, and it would complain about those lines, so I switched to AWK and had a lot of fun writing one-off programs. My mainstream history is more like FORTRAN to C to C++ via Cfront to...

But read up on it: you have to provide a transformation because y’ is composed of an x and a y component, and you need to take that and differentiate via the chain rule.

They don't block them for a reason, it's a whack-a-mole game. There’s so many that it's impossible to see them all so they all acquiesce. Youtube should be blocking them because they can but they don't because will hurt their business model.

I'm not sure where you went wrong in your case but if you were computing the curl in xyx coordinates and then switched to spherical coordinates then you need a jacobian factor to adjust computations. It took me quite a while to overcome the notion that the differential volume element in xyz...

I would suggest processing for people starting out who want interactive games or visual effects. It comes with everything you need to succeed. Python is also a good choice for one-off tasks you have to complete, as well as general-purpose programming, data science, and machine learning...

Thats happened to me when i went to visit some teachers i had. In one case, we made a pact to meet for lunch and I had gotten him a gyroscope as a remembrance of a story we shared when I was a sixth grader. Sadly, he paased away suddenly while in a family trip just days before we were to...

Welcome to PF! The mind can play tricks on oneself. If you feel it is starting again, I would recommend you check-in with your family doctor or whoever helped you through the previous crisis. PF is a highly moderated site. We have global guidelines that I encourage you read. In particular, we...

Some museums specialize in WW2 stuff, like the Pacific War Museum in Fredericksburg Tx. https://www.pacificwarmuseum.org/ New York State also has one near Saratoga. They have several expert curators who may provide detailed information on the unit. I know when I had a query, they were able to...

Claude is just making sure the hackers do their homework and vet everything Claude does. I can't wait until a hacker payload is dropped on the hacker's machine to disable it as part of a campaign to stop hacking anyone.

Yes, but end-to-end doesn't mean host. Some companies will hide behind and only after a data breach will they sheepishly admit to bad IT practices. Sadly, every company has a Dennis Nedry but very have any Dilophosaurus pets.

I know they say that, but do you really believe it? Encryption and decryption degrade performance, and, as happens in companies, someone may decide to skip a step. Also, claims of encryption might actually be valid only over the internet, not internally. At one time, I had considered an app...

But yet as Julius Caesar would say: Alea iacta est. The die is cast. We live in a new world with a new kind of threat.

Anthropic announced that an inflection point has been reached where the LLM tools are good enough to help or hinder cybersecurity folks. In the most recent case in September 2025, state hackers used Claude in Agentic mode to break into 30+ high-profile companies, of which 17 or so were actually...