Atlas (topology) Updated 2025-07-16
Collection of coordinate charts.
Avatar: The Way of Water Updated 2025-07-16
Some criticisms:
Lie group-Lie algebra correspondence Updated 2025-07-16
Bibliography:
Numerical analysis Updated 2025-07-16
Techniques to get numerical approximations to numeric mathematical problems.
The entire field comes down to estimating the true values with a known error bound, and creating algorithms that make those error bounds asymptotically smaller.
Not the most beautiful field of pure mathematics, but fundamentally useful since we can't solve almost any useful equation without computers!
The solution visualizations can also provide valuable intuition however.
Important numerical analysis problems include solving:
Australian company Updated 2025-07-16
Automated theorem proving Updated 2025-10-14
AGI-complete in general? Obviously. But still, a lot can be done. See e.g.:
- The Busy Beaver Challenge deciders
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
Russia Updated 2025-07-16
Sails.js Updated 2025-07-16
Front-end web framework integration: no native one:
- React:
- Vue.js:
- github.com/mikermcneil/ration Issue tracker disabled...
- live at: ration.io/
- selling a course at: courses.platzi.com/courses/sails-js/
- platzi.com/cursos/javascript-pro/ non-free and in Spanish pointed to from official README...
- Nuxt.js:
- github.com/mikermcneil/ration Issue tracker disabled...
TODO server-side rendering anyone??
- stackoverflow.com/questions/32412590/how-to-use-react-js-to-render-server-side-template-on-sails-js
- stackoverflow.com/questions/54217147/ssr-for-react-redux-application-with-sails
- gist.github.com/duffpod/746a660bcddfd986878c92dde1a04f06
- www.reddit.com/r/reactjs/comments/7saoqm/sailsjs_or_adonisjs_designed_for_server_side/
Baidu Baike Updated 2025-07-16
Ban political donations Updated 2025-07-16
C6 Oxford physics course Updated 2025-07-16
A very honest review of my Oxford University master's degree (theoretical physics at keble college) by alicedoesphysics (2020)
Source. Basically all her courses are from the Mathematical Institute of the University of Oxford, and therefore show up at the Moodle of the Oxford Mathematics Institute of Oxford. Climate change Updated 2025-07-16
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ANSI art Updated 2025-07-16
OMG, Ciro Santilli only learned about this in 2021 after: twitter.com/ryancdotorg/status/1375484757916672000
Bicycle Updated 2025-07-16
Big 8 (Usent) Updated 2025-07-16
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