Viewing profile — sgdpk

Second Axler's book! (probably as a second exposure after a first course, to really understand what's going on in Linear Algebra)

We have been pretty well informed of Musk's shenanigans in Portugal. His sieg heil spread pretty quickly.

Ben Felix recounts Buffett's answer to this in 2019: https://youtu.be/32SnTUtdsOI?t=557

Cool :) I am a scientist, so having an easier way to parse the abstracts would be most welcome. Keep up the good work.

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 …

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 "partic…

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 i…

Thank you for replying! The project seems promising, I'll follow with interest. Hope it goes well :)

Does this handle elimination of variables in a polynomial system (using an eliminating order for Groebner basis)?

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 …

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? I…

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?

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.

When systems (think "automated" systems like computer programs, mathematical axioms, formal systems, etc, where conclusions can be drawn/calculated "mechanically" from a few starti…

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 w…

I think you mean table spoon, which is often enough dressing for one person, in my experience.

Yet another fact discovered by von Neumann.

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 c…

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 emu…

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) rev…

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 lik…

I also just withdrew EUR (12h ago) and it arrived relatively fast.

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.

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 dimensio…