20221130, 20:49  #4522 
"Jane Sullivan"
Jan 2011
Beckenham, UK
17·19 Posts 
It's amazing that Carol Vordermann can't do arithmetic like that in her head. She has a thirdclass degree in engineering, which is somewhat disappointing from her viewpoint, and mine as I would expect engineers to have the mental arithmetic skills.
Sorry to state the obvious, but to multiply by 75 in my head, I would multiply by 3, divide by 4, then shift the decimal point 2 places to the right. The current incumbent (Rachel Riley who has an MSc in mathematics from Oxford) is much better at mental arithmetic. 
20221201, 07:23  #4523 
"Carlos Pinho"
Oct 2011
Milton Keynes, UK
2×3^{3}×5×19 Posts 
That can explains the engineers shortness here in the UK but worst we have people from other fields doing engineering work, such as biology, languages, etc. I find this amazing and painful, I keep escalating internally but no luck. Giving up was my solution. Stupidity is spread out.

20221208, 12:08  #4524 
"Vincent"
Apr 2010
Over the rainbow
2^{2}×7×103 Posts 

20221213, 02:23  #4525 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
89·113 Posts 
Mathematician withdraws preprint – 24 years after initial submission
Boris Shoikhet, then of the Independent University of Moscow, posted “Lifting formulas, Moyal product, and Feigin spectral sequence,” to arXiv on Oct. 28, 1998, proposing new conjectures in the field of quantum algebra. Last month, he withdrew the article, with the comment, “The paper has been withdrawn due to a crucial mistake in the arguments.” 
20230106, 05:28  #4526 
"Curtis"
Feb 2005
Riverside, CA
2^{3}·3·5·47 Posts 

20230106, 05:41  #4527 
Undefined
"The unspeakable one"
Jun 2006
My evil lair
5·7·191 Posts 
That is 500 good qubits.
The addition of the word "good" makes a lot of difference. Once you include error correction qubits, and other maintenance qubits, etc., that figure quickly grows to perhaps 10x or more total qubits. Last fiddled with by retina on 20230106 at 05:42 
20230106, 16:41  #4528  
"Tilman Neumann"
Jan 2016
Germany
13·41 Posts 
Quote:
with 372 physical qubits and a depth of thousands is neces sary to challenge RSA2048 even in the simplest 1Dchain system" I am not familiar with quantum computing. What does "depth of thousands" mean? 

20230106, 17:32  #4529 
"TF79LL86GIMPS96gpu17"
Mar 2017
US midwest
16306_{8} Posts 

20230106, 18:54  #4530  
"Tilman Neumann"
Jan 2016
Germany
1025_{8} Posts 
Quote:
So the depth seems to be something like the longest path of connected gates in the circuit (possibly after "transpilation"). Last fiddled with by Till on 20230106 at 18:58 

20230111, 15:32  #4531 
"Ed Hall"
Dec 2009
Adirondack Mtns
5×1,051 Posts 
One of my "better" machines doesn't like the cold. Last night it shut down due to 0F degrees (~ 18C) temperature around it. When I finally got it back up this morning, I asked the machine its temps and I think it's exaggerating. Maybe it's a "feels like" report:
Code:
$ sensors . . . temp1: +46.0°C (high = 128.0°C, hyst = +86.0°C) sensor = thermistor temp2: 82.5°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor temp3: +41.5°C (high = +80.0°C, hyst = +75.0°C) sensor = thermistor . . . 
20230111, 21:07  #4532 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
23511_{8} Posts 
and interesting comment: "In Sweden, traffic fines are set at a percentage of income. The owner of Ikea got stopped for speeding and paid a fine in the six figures. We ought to do that here." 
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