Test server Updated 2025-07-16
Book of Genesis Updated 2025-07-16
Talk by Ciro Santilli Updated 2025-07-16
Vulcan salute Updated 2025-07-16
qiskit/qft.py Updated 2025-07-16
This is an example of the
qiskit.circuit.library.QFT implementation of the Quantum Fourier transform function which is documented at: docs.quantum.ibm.com/api/qiskit/0.44/qiskit.circuit.library.QFTOutput:So this also serves as a more interesting example of quantum compilation, mapping the
init: [1, 0, 0, 0, 0, 0, 0, 0]
qc
┌──────────────────────────────┐┌──────┐
q_0: ┤0 ├┤0 ├
│ ││ │
q_1: ┤1 Initialize(1,0,0,0,0,0,0,0) ├┤1 QFT ├
│ ││ │
q_2: ┤2 ├┤2 ├
└──────────────────────────────┘└──────┘
transpiled qc
┌──────────────────────────────┐ ┌───┐
q_0: ┤0 ├────────────────────■────────■───────┤ H ├─X─
│ │ ┌───┐ │ │P(π/2) └───┘ │
q_1: ┤1 Initialize(1,0,0,0,0,0,0,0) ├──────■───────┤ H ├─┼────────■─────────────┼─
│ │┌───┐ │P(π/2) └───┘ │P(π/4) │
q_2: ┤2 ├┤ H ├─■─────────────■──────────────────────X─
└──────────────────────────────┘└───┘
Statevector([0.35355339+0.j, 0.35355339+0.j, 0.35355339+0.j,
0.35355339+0.j, 0.35355339+0.j, 0.35355339+0.j,
0.35355339+0.j, 0.35355339+0.j],
dims=(2, 2, 2))
init: [0.0, 0.35355339059327373, 0.5, 0.3535533905932738, 6.123233995736766e-17, -0.35355339059327373, -0.5, -0.35355339059327384]
Statevector([ 7.71600526e-17+5.22650714e-17j,
1.86749130e-16+7.07106781e-01j,
-6.10667421e-18+6.10667421e-18j,
1.13711443e-16-1.11022302e-16j,
2.16489014e-17-8.96726857e-18j,
-5.68557215e-17-1.11022302e-16j,
-6.10667421e-18-4.94044770e-17j,
-3.30200457e-16-7.07106781e-01j],
dims=(2, 2, 2))QFT gate to Qiskit Aer primitives.If we don't
transpile in this example, then running blows up with:qiskit_aer.aererror.AerError: 'unknown instruction: QFT'The second input is:and the output of that approximately:which can be defined simply as the normalized DFT of the input quantum state vector.
[0, 1j/sqrt(2), 0, 0, 0, 0, 0, 1j/sqrt(2)]From this we see that the Quantum Fourier transform is equivalent to a direct discrete Fourier transform on the quantum state vector, related: physics.stackexchange.com/questions/110073/how-to-derive-quantum-fourier-transform-from-discrete-fourier-transform-dft
Crystal Fire: The Birth of the Information Age Updated 2025-07-16
College of the University of Oxford Updated 2025-07-16
A good explanation of how this insane system came up is given at Video "History of Oxford University by Chris Day (2018)".
The colleges are controlled by its fellows, a small self-electing body of highly successful scholars, usually in the dozens per college number it seems. Each college also usually has different types of fellows, e.g. see he university college page: www.univ.ox.ac.uk/about/college-fellowships/ (archive)
The college system does has its merits though, as it instates a certain sense of Hogwarts "belonging" to a certain group, so it might help students get better support for their learning projects from older students, or through the tutoring system. Of course, all such "belonging" feelings are bad, the correct thing would be to make great online tutorials for all, and answer questions in the open. But oh well, humans are dumb.
The college you are in impacts the quality of your courses, because tutorials are per-college. As of 2023, Ciro Santilli spoke to some students of the Computer science course of the University of Oxford, and was told that in some cases where you don't have anyone who can give the tutorial, you instead get a "class", i.e. a P.h.D. student going through question sheets with no interaction in the C.S. department, rather than a deep interactive discussion over the college fire. How can this system be so broken, it is beyond belief
Giscus Updated 2025-07-16
Steven Byrnes Updated 2025-07-16
Infrastructure of the University of Oxford Updated 2025-07-16
RDNA Updated 2025-07-16
Pedophilia Updated 2025-07-16
Winklevoss twins' involvement in Bitcoin Updated 2025-07-16
AMD GPU driver Updated 2025-07-16
Bitcoin Core executable Updated 2025-07-16
Bitcoin output script Updated 2025-07-16
Bullet Physics parallel execution Updated 2025-07-16
Does not seem to support it unfortunately:
- 2015 thread: pybullet.org/Bullet/phpBB3/viewtopic.php?t=10783. On the reply pybullet.org/Bullet/phpBB3/viewtopic.php?p=36197&sid=5fbceed0c3a5ebcf233d328bb4ee1342#p36197 Erwin Coumans says there's no support, and no support planned.
Cool data embedded in the Bitcoin blockchain Themes Updated 2025-07-16
In this section we document events that led to a large number of thematically related messages being added to the chain e.g. referencing some current event that happened, as opposed to the media encoding/type like images and text sections.
The "Hitler did nothing wrong" meme[ref] is repeated several times, e.g.: tx 41967a7d75e9e1ca8c142a45ce29ea08b451a3b55c3e33538f5cc8a389ec66ab (2015-07-20):This one is also an Eternity Wall message. The message had also been previously Base58 encoded at address 1HitLerDidNothingWrongggggghJewfv in two different instances:
EW Hitler did nothing wrong.
- tx 55654178fe601c1fbe8b52b544286962523f11ec60ef12c94bc55198bb8c405c block 216909 (2013-01-17). That one is also followed by some other niceties:
1NiggersNiggersNiggersNiggerwxhs77: 4x "Niggers"1JewsDidTheEconomyXXXXXXXXXXbd7ZkE: "Jews Did the Economy"
- tx daa7fa928b8079174a646a9456ce9dad14eac44beb2fe5a2cb1c35ce70e92916 block 310007 (2014-07-10)
Brazil:
- tx 1c05bb7c0a8c9498d33a1e6d4a91bbb4c651daa5ea5a21aa5c8c600d3300b8bb Viva Brazil's Impeachment!
- tx 105fb3a0be8ab50bfa36012e0319a752dee39702cb44f3904cf423eb20367d57 contains a misogenous joke:which translates to:It is attributed to Diego Silva de Oliveira, possibly this football player: en.wikipedia.org/wiki/Diego_Silva_(footballer,_born_1990)
- c72dc315a5504362d01f2dcdfe77826d14a9eb3411b83edd7aa782e95e4a7794 via cryptograffiti.info:
NÓS DISSEMOS SIM AGÊNCIA TRANSITIVA 2015 Nota pública de reconhecimento do Acordo Reconformado, assinado pela Agência Transitiva e pela Escola de Artes Visuais do Parque Lage, em 22 de Abril de 2015. #ENCRUZILHADA EAV PARQUE LAGE 22.04.2015 - 1c05bb7c0a8c9498d33a1e6d4a91bbb4c651daa5ea5a21aa5c8c600d3300b8bb via cryptograffiti.info:
Our indexer does not handle UTF-8, here's a collection of some UTF-8 messages we've stumbled upon somewhat randomly:
Arabic:
- 7eb561f2139761064de20033fa4843f1f3e1a9551268704b36f84d94e66fd91a
يا سلم!
شعرك جميل
و عينيك حلوة
انا عطشان
اِروني من عينيك - b7376cae03b88392e5fd0292bcb43105386fbb534fc9be68c1e3d0b8f39e5ba4 via cryptograffiti.info
sjalom, salaam, peace!
الدين - 7a898b7e6b2145f4f887e1ff890d0b613e3008fbe350aa92662735e3acd0c0bc
هذه رسالة من المستقبل
إلى الماضي ...
الحياة صعبة في المستقبل
رعاية العالم
وتحمل المسؤولية
/yThis is a message from the future
To the past...
Life is difficult in the future
Caring for the world
And take responsibility
/y
Russian:
- 1dcd62c922eb1ddbc1f58615b6271d64736bf55e83408cef02a7d0ac6707e423 via cryptograffiti.info
А на Земле Быть Добру!
- 596cc6e905a5fc8248cf59198a19ce5070228b302a9f3a993197e2c87ddcaf14 via cryptograffiti.info
Книга Вечно Живущих открыта
The Book of the Ever-Living is open
- 596cc6e905a5fc8248cf59198a19ce5070228b302a9f3a993197e2c87ddcaf14 via cryptograffiti.info
Это тест, сука блять.
- ed56ef68ccbfb1d47bc159fb62fab6807ee4d7363d0ad4cded2e922a5b47362e via cryptograffiti.info
Путин хуйло лалалалалалалалалал
Putin sucks lalalalalalalalala
Chinese:
- 12b32b6752fbf521243c63dfb5e3fda46523dd7b572143635458f743591d3e35 via cryptograffiti.info:
中文測試
Chinese test
- a3dbd6cbb8637b6bf91d22ea97db2843d995498fd62740b9ed1e9dc068f2ad2d via cryptograffiti.info
- Ordinal ruleset inscription
- tx 8e89ce6bef85aea795f41f97a4dcd550d8cbc6d1f606f37109f6dc8b31f91bc1: Diamond Sutra in Chinese. Again at tx 0bc660cc2c6d0ec4f7dfe61bfb3a592b4a65677b16da7db35729fd43eee5323e.
- tx 7b0a0b9f18a729e905822304f9c4c05f8851d10bdc82efa902fd936ef874efeb: the first few poems from Three Hundred Tang Poems, a collection of famous Chinese poems from the Tang dynasty compiled in 1763. Each poem uses a classical Chinese poetry form with a small number of verses, usually 4, and fits into one line. Most lines contain the poem title, dynasty, author name followed by the poem, e.g. the first line:is amazingly translated by Google Translate as:
《春晓》唐 文嘉 春眠不觉晓，处处闻啼鸟。 夜来风雨声，花落知多少。
Japanese:
- ac2ad7c15162a8e461387b0d0d681bb5f81f2db1138b8f200b81bbc585bd0b8f via cryptograffiti.info:
モキーのフラッシュバン許すな
Hebrew:
- 0b32736592ce7abdd4d971bc4591544e1610ff51f498c9a14a6ba34a3abcad5d via cryptograffiti.info
חתימה טובה לכולם בכלל ולחברי ביטקוין ישראלי בפרט.
- d7b80c8fefc88cc3f06d74f8496e2dc6f44b5f5f0a59f9ba1ba27266848a8666 via cryptograffiti.info contains what appears to be UTF-8 Hebrew text on my terminal, but Google Translate couldn't translate it, so we are unsure.
Davinci Jeremie Updated 2025-07-16
Just buy $1 worth of Bitcoin please! by Davinci Jeremie (2013)
Source. List of search engines Updated 2025-07-16
There are unlisted articles, also show them or only show them.