Krusader Updated 2025-07-16
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The most powerful GUI file manager ever?? Infinite configurability??
Ciro Santilli wasted some time on it before he gave up on file managers altogether and started using only the CLI with a few aliases.
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Lagrange's four-square theorem Updated 2025-07-16
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x86 Paging Tutorial / ARM Updated 2025-07-16
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x86 Paging Tutorial / Basic TLB operation Updated 2025-07-16
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After a translation between linear and physical address happens, it is stored on the TLB. For example, a 4 entry TLB starts in the following state:
  valid  linear  physical
  -----  ------  --------
> 0      00000   00000
  0      00000   00000
  0      00000   00000
  0      00000   00000
The > indicates the current entry to be replaced.
And after a page linear address 00003 is translated to a physical address 00005, the TLB becomes:
  valid  linear  physical
  -----  ------  --------
  1      00003   00005
> 0      00000   00000
  0      00000   00000
  0      00000   00000
and after a second translation of 00007 to 00009 it becomes:
  valid  linear  physical
  -----  ------  --------
  1      00003   00005
  1      00007   00009
> 0      00000   00000
  0      00000   00000
Now if 00003 needs to be translated again, hardware first looks up the TLB and finds out its address with a single RAM access 00003 --> 00005.
Of course, 00000 is not on the TLB since no valid entry contains 00000 as a key.
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Chemiosmosis Updated 2025-07-16
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Chemistry course of the University of Oxford Updated 2025-07-16
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www.ox.ac.uk/students/academic/guidance/undergraduate/handbooks in theory links to all handbooks, but some are likely paywalled. But Google can generally find them anyways.
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Ciro Santilli's biography Updated 2025-07-16
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Maybe Ciro Santilli should do something useful and remarkable so that someone might actually want to read his biography in the first place. But hey, procrastination.
Ciro Santilli was born in Brazil in the small/medium city of Rio Claro, São Paulo (~200k people in 2020) in the State of São Paulo in 1989 AD.
The family then moved to Jundiaí in 1995, and then finally to Santos, São Paulo, Brazil in 1997.
In 2010, as mentioned at Section "Ciro Santilli's formal education", Ciro as admitted in a double degree program at the École Polytechnique, France, where he stayed until 2013. Going to France was a mind blowing, life changing event.
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Alanine Updated 2025-07-16
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Decay scheme Updated 2025-07-16
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GAN MNIST hello world Updated 2025-07-16
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The GAN paper itself does a bit of this, cool hello world:
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Human chromosome Updated 2025-07-16
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Quantum computing player in Brazil Updated 2025-07-16
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Sequelize parallel example Updated 2025-07-16
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ARM architecture family Updated 2025-07-16
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This ISA basically completely dominated the smartphone market of the 2010s and beyond, but it started appearing in other areas as the end of Moore's law made it more economical logical for large companies to start developing their own semiconductor, e.g. Google custom silicon, Amazon custom silicon.
It is exciting to see ARM entering the server, desktop and supercomputer market circa 2020, beyond its dominant mobile position and roots.
Ciro Santilli likes to see the underdogs rise, and bite off dominant ones.
The excitement also applies to RISC-V possibly over ARM mobile market one day conversely however.
Basically, as long as were a huge company seeking to develop a CPU and able to control your own ecosystem independently of Windows' desktop domination (held by the need for backward compatibility with a billion end user programs), ARM would be a possibility on your mind.
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Integer quantum Hall effect Updated 2025-07-16
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Figure 1. Source.
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OpenQASM Updated 2025-07-16
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On Qiskit qiskit==0.44.1:
qc.qasm()
E.g. with our qiskit/hello.py, we obtain the Bell state circuit:
OPENQASM 2.0;
include "qelib1.inc";
qreg q[2];
creg c[2];
h q[0];
cx q[0],q[1];
measure q[0] -> c[0];
measure q[1] -> c[1];
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Organization developing quantum software Updated 2025-07-16
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Quantum computing company Updated 2025-07-16
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Quran passage Updated 2025-07-16
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Arm (company) Updated 2025-07-16
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Video 1.
Arm 30 Years On: Episode One by Arm Ltd. (2022)
Source.
Video 2.
Arm 30 Years On: Episode Two by Arm Ltd. (2022)
Source.
Video 3.
Arm 30 Years On: Episode Three by Arm Ltd. (2022)
Source. This one is boring US expansion. Other two are worth it.
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