Commutative property Updated 2025-07-16
Commutative ring Updated 2025-07-16
Compact space Updated 2025-07-16
Companies with investors are evil Updated 2025-07-16
They may have nice looking save the world charity campaigns, but once you get even close to affecting their revenue stream, the axe falls. The charity is only a publicity stunt to reduce wages.
Some level of government intervention is needed to control investor's greed.
It is just a question of business model: some business models are eviler than others. Making people pay for operating systems being possible the most evil of all.
One thing must be said however. You can learn a lot by working in a good company, because it ends up putting you in contact with practical real problems that you wouldn't otherwise see by just doing your own random low-tech startup. This is especially valuable if said company is also enlightened enough to use and contribute back to open source software, thus improving the world and paying back the moral debt of using other people's work for free.
Another important point to consider is who in the company is evil. In a sane tech company, the lowly engineers are going to be non-evil. And then the more you go up the management chain, the more aligned you have to be with investors, and thus the more and more evil you get. HR is just evil from the bottom though, it's just the nature of their job.
Company Updated 2025-07-16
Company with a semiconductor fabrication plant Updated 2025-07-16
A list of fabs can be seen at: en.wikipedia.org/wiki/List_of_semiconductor_fabrication_plants and basically summarizes all the companies that have fabs.
Comparative genomics Updated 2025-07-16
Cool data embedded in the Bitcoin blockchain AtomSea & EMBII data format Updated 2025-07-16
Best guess so far, all in ASCII hex of output scripts:
- remove the single output value different from first one from payload, that's the change, and it is randomly placed as far as I see
- 64 bytes: hex address of top level text
- 1 byte: some random punctuation
- decimal number of bytes of some payload
- 1 byte: some random punctuation
- 64 bytes: same as the first address
- CR LF
- ends in NUL
Competitive programming Updated 2025-07-16
Competitive programming website Updated 2025-10-14
Compile MicroPython code for Micro Bit locally Updated 2025-07-27
To use a prebuilt firmware, you can just use What that does is:
uflash, tested on Ubuntu 22.04:git clone https://github.com/bbcmicrobit/micropython
cd micropython
git checkout 7fc33d13b31a915cbe90dc5d515c6337b5fa1660
uflash examples/led_dance.py- convert the MicroPython code to bytecode
- join it up with a prebuilt firmware that ships with uflash which contains the MicroPython interpreter
- flashes that
To build your own firmware see: Compile MicroPython code for Micro Bit locally on Ubuntu 22.04 with your own firmware
Compiler Updated 2025-07-16
Compiler toolchain Updated 2025-07-16
Complete basis Updated 2025-07-16
Finding a complete basis such that each vector solves a given differential equation is the basic method of solving partial differential equation through separation of variables.
The first example of this you must see is solving partial differential equations with the Fourier series.
Notable examples:
- Fourier series for the heat equation as shown at Fourier basis is complete for and solving partial differential equations with the Fourier series
- Hermite functions for the quantum harmonic oscillator
- Legendre polynomials for Laplace's equation in spherical coordinates
- Bessel function for the 2D wave equation on a circular domain in polar coordinates
Compton scattering Updated 2025-07-16
Classic theory predicts that the output frequency must be the same as the input one since the electromagnetic wave makes the electron vibrate with same frequency as itself, which then irradiates further waves.
But the output waves are longer because photons are discrete and energy is proportional to frequency:
The formula is exactly that of two relativistic billiard balls colliding.
Compton Scattering by Compton Scattering (2017)
Source. Experiment with a caesium-137 source. Compulsive hoarding Updated 2025-07-16
Computable function Updated 2025-07-16
Computable number Updated 2025-07-16
Computational protein folding Updated 2025-07-16
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