Computerphile video about haveibeenpwned.com and pwned passwords, copy/pastas in toot for use

This video shows relatively secure way how to check that your passwords are in some online database.

Generating SHA1 from cli:

echo -n yourpassword | sha1sum

Pulling hashes from pwnedpasswords.com

curl https://api.pwnedpasswords.com/range/*your first 5 characters from

hashed password

Link to video:

https://invidio.us/watch?v=hhUb5iknVJs

If YouTube seems too slow on Firefox, this is quick fix

https://twitter.com/cpeterso/status/1021626510296285185

This is relatively old, but people still don't know about it. To fix it you type about:config in new tab, right click on any setting and select New>String. Then copy/paste these:

Name: general.useragent.override.youtube.com

Value:

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:41.0) Gecko/20100101 Firefox/41.0

When you go to YouTube old format should appear and load much faster. For dark theme you can use Stylus addon.

There is Telegram bridge to Matrix, cool

https://t2bot.io/telegram/

Psychedelic rock

This one is spinning me well.

https://youtu.be/LlY4NYughhA

How ISPs Violate the Laws of Mathematics - by MinutePhysics

Some toots about number 163

Also \(163\) has property of giving almost whole number when used in \(e^{\sqrt{163}\pi}=262537412640768743.9999999999992500 ...\) as one of Ramanujan constants. It has some more properties as being one of "lucky" and "fortunate" math numbers, and gives good aproximations of \(e\) and \(\pi\) . Pretty stacked up number, if you ask me.

Some toots about number 163

Heegner numbers are numbers which don't show unique factorisation in that new defined system, so for example \(6=2*3\) is also \(6=(1+\sqrt{-5})(1-\sqrt{5})\), here 5 is Heegner number, and \(163\) also has that property and its last proven number to have that property.

Some toots about number 163

So factorised \(a²+b² = c²\) in new system (which involves imaginary numbers) is now \(a²+b²=(a-ib)+(a+ib)\) and that system had to have same property of unique factorisation of whole numbers, unique factorisation means that any whole number \(w\) can be written as unique product of prime numbers, and this works for \(\sqrt{-1}\)

Some toots about number 163

I've noticed that I'm close to \(163)\. toot, so I'll toot something very cool about this number.

\(163)\ is largest of nine Heegner numbers, and I'll explain what those are as I understand it. Gauss wanted to identify all perfect Pythagorian triplets which are whole numbers \(a, b ,c\) that satisfy \(a²+b² = c²\). To do that he had to involve complex numbers and come up with new factorisation system.

Structural engineering student looking for some fediverse socializing. Bad English and typos will most likely happen.

#engineering #maths #linux #foss #privacy

Joined Feb 2019