Pauli-X gate by Ciro Santilli 37 Updated 2025-07-16
The quantum NOT gate swaps the state of and , i.e. it maps:
As a result, this gate also inverts the probability of measuring 0 or 1, e.g.
Equation 2.
Quantum NOT gate matrix
.
Figure 1.
Quantum NOT gate symbol
. Source.
The Oxford mathematics Moodle has detailed course listings, and most PDFs are not paywalled.
E.g. the 2024 course:
WormWideWeb by Ciro Santilli 37 Updated 2025-07-16
wormwideweb.org/
Browse freely moving whole-brain calcium imaging datasets
Domain list only, no IPs and no dates. We haven't been able to extract anything of interest from this source so far.
Domain hit count when we were at 69 hits: only 9, some of which had been since reused. Likely their data collection did not cover the dates of interest.
Grand Unified Theory by Ciro Santilli 37 Updated 2025-07-16
Appears to be an unsolved physics problem. TODO why? Don't they all fit into the Standard Model already? So why is strong force less unified with electroweak, than electromagnetic + weak is unified in electroweak?
Nobel disease by Ciro Santilli 37 Updated 2025-09-11
The Eighth Day of Creation has a related quote:
In a conversation a few weeks earlier at the faculty club of the Massachusetts Institute of Technology, a couple of biologists had speculated whether Pauling, whose recent popular book on the benefits to health and sanity of massive doses of vitamin C was stacked in display near the entrance of the M.I.T. bookstore, was showing signs of what one of the men called "old scientist's disease" - which they defined as what happens to great men when they grow beyond the psychological reach of the salutary system by which scientists blow the whistle on one another's mistakes.
Video 1.
The Nobel Prize Winners With Crazy Theories by Qxir
. Source.
Gilberto Gil by Ciro Santilli 37 Updated 2025-07-16
Gilberto is definitely the most psychedelic/tribal one of the The Holy Trinity of popular Brazilian music, though he also has a boyish quality to his soul.
He is also perhaps the one that impresses Ciro Santilli the most, at times he can't help but feel:
OMG how the hell did he come up with that?!
Figure 2.
Gilberto Gil in the cover of his 1977 album Refavela
. Source.
Ciro's word of caution for 2019 aspiring system programmers: Should you waste your life with systems programming?
This is basically a direct consequence of backward design.
The higher the level you can operate at, the better.
C is better than assembly, userland better than kernelland.
The ideal level to operate at, and one of humankind's greatest ambitions is "AGI, make me money", the highest possible level.
Only go down a level when it seems necessary.
Type-II superconductor by Ciro Santilli 37 Updated 2025-07-16
Figure 1.
Sketch of the typical superconducting phase diagram of a Type-II superconductor
. Source.

Unlisted articles are being shown, click here to show only listed articles.