Yes, they are normal... but they also aren't even peer-reviewed yet.
Ergo, you can treat it as more significant than a random physics crank posting on his blog, but not as trustworthy as something that has in fact been properly vetted.
>> ArXiv pre-prints are pretty normal in physics and math.
Correct, and they are usually followed up by a published, peer-reviewed paper as well. I look forward to the day this one also gets reviewed and published.
ArXiv pre-prints are pretty normal in physics and math.
>> that doesn't have anything to do with the science, it does say something about the sloppiness of the researcher, I think.
Interesting. BTW, Krasznahorkay is a highly-cited researchers.