sgdpk

5 ms·

1.
by sgdpk 8d ago
Very cool presentation. I loved how he says that they improved dict so much that they basically rediscovered database tables with indices.
2.
by sgdpk 11mo ago
Second Axler's book! (probably as a second exposure after a first course, to really understand what's going on in Linear Algebra)
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by sgdpk 1y ago
We have been pretty well informed of Musk's shenanigans in Portugal. His sieg heil spread pretty quickly.
4.
by sgdpk 2y ago
Ben Felix recounts Buffett's answer to this in 2019: https://youtu.be/32SnTUtdsOI?t=557
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by sgdpk 2y ago
Cool :) I am a scientist, so having an easier way to parse the abstracts would be most welcome. Keep up the good work.
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by sgdpk 2y ago
It looks great. But it's missing one critical feature of "fast-food" apps like TikTok: the content is not easily digestible. Which is understandable, because scientific papers are dense. Maybe a good idea would be to parse th
7.
by sgdpk 2y ago
Good read. It is also refreshing to read how Schrödinger came up with his equation even if it was not clear how to interpret it. He was attempting to formalize de Broglie's "particles as waves" concept, which, according to th
8.
by sgdpk 2y ago
I don't know about this book, but I highly recommend "Linear Algebra Done Right" by the same author. It is a very clear presentation of Linear Algebra. Although I would recommend it for someone who already took a first course
9.
by sgdpk 2y ago
Thank you for replying! The project seems promising, I'll follow with interest. Hope it goes well :)
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by sgdpk 2y ago
Does this handle elimination of variables in a polynomial system (using an eliminating order for Groebner basis)?
11.
Interactive visualization of qubit states(desmos.com)
3 points by sgdpk 2y ago|1 comments
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by sgdpk 2y ago
This is a visualization of what the states of a qubit can look like in two different physical systems (particle spin / photon polarization). Despite their differences, they can be described using the same mathematical object: a unit ve
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by sgdpk 3y ago
I have worked on this aspect on quantum computation [1]. The main problem is that reversibility is a feature of isolated quantum systems. In practice, they are not isolated. Why? It's not just because of small interactions with the env
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by sgdpk 3y ago
I am facing the same problem right now. I am abroad but cannot install foreign apps. Have you (or them) found any solution to this in the meantime?
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by sgdpk 3y ago
To be fair, I was taught exactly what this paper claims in my Physics degree. Although I was also taught what they call the "myth" in other classes.
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by sgdpk 3y ago
When systems (think "automated" systems like computer programs, mathematical axioms, formal systems, etc, where conclusions can be drawn/calculated "mechanically" from a few starting points) get large enough, they g
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by sgdpk 3y ago
My view is that there is a landscape of mathematical truths, but we can only explore/discover precisely those things that our imagination allows. In other words, we discover what we can invent.
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by sgdpk 3y ago
I think you mean table spoon, which is often enough dressing for one person, in my experience.
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by sgdpk 3y ago
Yet another fact discovered by von Neumann.
20.
by sgdpk 3y ago
I am becoming convinced that sugar, although not exactly a drug to which we could apply the concepts of addiction and withdrawal (like tobacco, alcohol, or opioids), nevertheless creates habits that are really hard to break. Notice how we t
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by sgdpk 3y ago
Good point. I tried asking ChatGPT to write the numbers from 1 to 10 in 1 sec intervals and it couldn't. Edit: Oops, I read the question the other way around. Humans can easily emulate ChatGPT's behaviour in this scenario -- just
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by sgdpk 3y ago
Inspired by this, in my PhD we actually used a quantum computer to do classical logic to investigate if that can lead to energy savings [1]. Quantum machines are (in principle) reversible, so they may avoid Landauer's principle. Howeve
23.
by sgdpk 3y ago
So, for your first questions, you can definitely entangle as little or as many qubits as you want. In practice, it gets harder the more qubits you want to entangle. But a state like the GHZ state can entangle all qubits in your system. How
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by sgdpk 3y ago
I also just withdrew EUR (12h ago) and it arrived relatively fast.
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by sgdpk 4y ago
I still see these guys in Lisbon's main train station trying to get new customers. They also seem to do some sort of face scan for new customers.
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by sgdpk 4y ago
As someone commented, this example is not so mysterious. It's just a change of variables to make the argument of exp() dimensionless. Here's a good example of the power of dimensional analysis: how small should the Earth be to col
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by sgdpk 4y ago
The video you sent is by the last author of the paper, so it seems legit.
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by sgdpk 4y ago
I have to second this. It's very well written and presents a clear view of what Linear Algebra is. Although it might be best used as a second book in Linear Algebra (depending on your preparation).
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by sgdpk 4y ago
I don't know exactly from what angle you're looking at this, so let me explain through trigonometry. We know that triangles may be displaced, rotated, flipped and scaled while still looking the same. We have a word for this: we sa
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by sgdpk 4y ago
This is a great example! I was fortunate enough that my father explained it to me when I was in school. An equation is like a balanced scale: whatever you do to one side, you must do to the other, to keep things balanced. I still remember t

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