Analytical chemistry Updated 2025-07-16
Analytic continuation Updated 2025-07-16
visualizing the Riemann hypothesis and analytic continuation by 3Blue1Brown (2016) is a good quick visual non-mathematical introduction is to it.
The key question is: how can this continuation be unique since we are defining the function outside of its original domain?
The answer is: due to the identity theorem.
Chinese male ideal Updated 2025-07-16
Lysozyme Updated 2025-07-16
The second protein to have its structure determined, after myoglobin, by X-ray crystallography, in 1965.
Breaks up peptidoglycan present in the bacterial cell wall, which is thicker in Gram-positive bacteria, which is what this enzyme seems to target.
Part of the inate immune system.
Public Domain Day Updated 2025-07-16
Python implementation Updated 2025-10-18
Royal Institution Updated 2025-07-16
R (programming language) Updated 2025-07-16
Ubuntu 23.04 install:
sudo apt install rbaseHello world:
R -e 'print("hello world")' RSA (cryptosystem) Updated 2025-07-16
Based on the fact that we don't have a P algorithm for integer factorization as of 2020. But nor proof that one does not exist!
The private key is made of two randomly generated prime numbers: and . How such large primes are found: how large primes are found for RSA.
The public key is made of:
n = p*q- a randomly chosen integer exponent between
1ande_max = lcm(p -1, q -1), wherelcmis the Least common multiple
Given a plaintext message This operation is called modular exponentiation can be calculated efficiently with the Extended Euclidean algorithm.
m, the encrypted ciphertext version is:c = m^e mod nThe inverse operation of finding the private
m from the public c, e and is however believed to be a hard problem without knowing the factors of n.Bibliography:
- www.comparitech.com/blog/information-security/rsa-encryption/ has a numeric example
Open source LLM Updated 2025-07-19
Magazine Updated 2025-07-16
f3d Updated 2025-07-16
Yohei Nakajima Updated 2025-07-16
He does lots of little experiments which is cool.
Craig Steven Wright Updated 2025-07-16
This dude actually managed to convince a brain-dead British court that he was Satoshi and force a takedown of the Bitcoin whitepaper from bitcoin.org/bitcoin.pdf where it had been for many years prior: coinmarketcap.com/academy/article/bitcoin-org-ordered-to-take-down-bitcoin-whitepaper-because-of-copyright-infringement The page was updated to simply display the following Satoshi quote:
It takes advantage of the nature of information being easy to spread but hard to stifle. - Satoshi Nakamoto
The mere thought that Satoshi would attempt to copyright takedown the Bitcoin whitepaper, and not be able to back his identidy with any cryptographic keys, makes one shrivel to the bones.
Also, kids, this is why you put a fucking license on everything you release to the public, and especially when doing so anonymously!!! A quick CC BY-SA on that paper would have prevented all this bullshit.
The existence of this outrageous fraudster has had two good effects on the world however it must be said:
- the release of Adam Back and Martti Malmi early email history with Satoshi: www.forbes.com/sites/digital-assets/2024/02/23/new-emails-reveal-staggering-clues-to-the-mystery-of-bitcoin-creator-satoshi-nakamoto
- the memes: Craig Steven Wright memes
Timeline:
- 2015-12-08 Wired article claims he may be Satoshi: www.wired.com/2015/12/bitcoins-creator-satoshi-nakamoto-is-probably-this-unknown-australian-genius/. A few days later, evidence of foul play emerged, and on 2019-04-30 Wired retracted the article altogether
- 2016-05-02 publicly claims he is Satoshi www.timesofisrael.com/australian-entrepreneur-craig-wright-says-he-created-bitcoin/
- 2024-05-20 British judge James Mellor fisting the fuck out of Craig: www.reuters.com/technology/self-proclaimed-bitcoin-inventor-lied-repeatedly-support-claim-says-uk-judge-2024-05-20/
An Australian computer scientist who claimed he invented bitcoin lied "extensively and repeatedly" and forged documents "on a grand scale" to support his false claim, a judge at London's High Court ruled on Monday.
Interesting
- www.reddit.com/r/Bitcoin/comments/4i7k9a/strange_edits_on_craig_wrights_wikipedia_page/ "Strange edits on Craig Wright's Wikipedia page made two days before the revelation, from an IP address in Barbados (possibly made by Craig himself?)"
Amit Singhal Updated 2025-07-16
Unfortunately accused of sexual misconduct: www.theguardian.com/technology/2019/mar/11/google-executive-payout-harassment-amit-singhal. But one can still do good despite our defects:
Pitched OurBigBook.com to him:
Idea: make all Sitare University materials open, and allow students to write the content
Quantum superposition Updated 2025-07-16
Quantum superposition is really weird because it is fundamentally different than "either definite state but I don't know which", because the superposition state leads to different measurements than the non-superposition state.
Examples:
- www.youtube.com/watch?v=tt8gVXDsh7Q "Interference in quantum mechanics" by Looking Glass Universe (2015) shows how a left-right spin measurement has a defined value for a superposed half up half down state, but not for a pure up state.TODO can this be conducted? As mentioned in the video, this is closely linked to the fact that you can describe the wave function in multiple different bases (up/down or left/right), which is also at the root of the uncertainty principle.
- Video "Quantum Mechanics 9b - Photon Spin and Schrodinger's Cat II by ViaScience (2013)" gives a similar photon version
- it seems that the single particle double slit experiment can also be thought of as in terms of a superposition of "the particle goes through the right" and "the particle goes through the right", although it is a bit harder to thing about as it is not a discrete process
GNOME Display Manager Updated 2025-07-16
Matthew Heaney Updated 2025-07-16
Quantum statistical mechanics Updated 2025-07-16
Bibliography:
OpenCourseWare Updated 2025-07-16
There are unlisted articles, also show them or only show them.