comnetxr

9 ms·

31.
by comnetxr 7y ago
It's a bit complex for a comment, but electromagnetism defined in terms of differential forms generalizes nicely to all dimensions. There certainly is a 2+1D electromagnetism.
32.
by comnetxr 7y ago
According to the model in this proposal, corporations report their "true" profits to shareholders, and artificial "profits" to tax authorities using corporate accounting tricks (i.e. https://en.wikipedia.or
33.
by comnetxr 8y ago
While I would certainly be more happy in a world with either IRV or Condorcet method than FPTP, I think this argument against IRV is too simplistic. The situation is candidates D, R with the largest numbers of voters who prefer them first,
34.
by comnetxr 8y ago
I played a short game; I captured black's queen on black's back row with my queen, in which the black king could have taken my queen or moved out of check. Instead, black moved a different piece (invalid given that it is in check
35.
by comnetxr 8y ago
Agree 95%, but one point he uses to crticize Warren seems wrong: Where Warren says "America’s big tech companies have achieved their level of dominance in part based on two strategies: using Mergers to Limit Competition,..." he ar
36.
by comnetxr 8y ago
It collapses the second narrative, but not the first. It could still be that drug money was the driving force behind the cartels, but after they grew to sufficient size, the cartels could sustain themselves otherwise. The second narrative i
37.
by comnetxr 8y ago
Thanks for the tip Jamii, and for the nice original post. This is pretty close to what I've been doing, but since I'm storing Julia values rather than numeric data I still to need to convert my data to strings to store in "f
38.
by comnetxr 8y ago
Cool! Could this be used to make on-disk DataFrames that store arbitrary Julia types? Serializing/deserializing such dataframes with JLD has given me lots of trouble (both too slow and also sometimes the files get corrupted in ways tha
39.
by comnetxr 8y ago
I wanted to like Simple. But the budgeting and money tracking features were never really that useful, I needed checks, and my card number was stolen and used to purchase groceries in another state even though I had only used it for a couple
40.
by comnetxr 8y ago
I've tried both. I liked Asana a lot in the early days - it was simple and removed the friction of logging tasks. I especially liked that many tasks could be entered in the same way as an outline, just using enter to drop to the next l
41.
by comnetxr 8y ago
The radius of the biggest black hole that would have evaporated by now is about a femtometer, or the size of a proton.
42.
by comnetxr 8y ago
Reasonable sized black holes evaporate extremely slowly. A black hole the mass of the moon would take 10^45 years to evaporate, so none would have evaporated yet in the lifetime of this universe which is about 1.4*10^10 years old. See http
43.
by comnetxr 8y ago
memoization is a common use case. If you are doing an expensive computation that gives the same answer for the the same inputs, you can build a lookup table for cases you have already encountered to avoid recomputing. you can use an object
44.
by comnetxr 8y ago
Neither unitary or hermitian means that operators are there own inverse. Unitary here means that the inverse is the same as the complex transpose - which means that there is an inverse and it is easy to find. This is important as quantum ci
45.
by comnetxr 9y ago
They say that action at a distance is "not compatible with special relativity" but retrocausality is because it's not full retrocausality (can't send signals back in time) but just a weaker kind. I think they've mis
46.
by comnetxr 9y ago
Why would any society that had lost all access to Asimovs foundation trilogy retain the knowledge to read one of these disks?
47.
by comnetxr 9y ago
A sub or filter for each of the arxiv subcategories would make sense and would be easy to implement for papers submitted from the arxiv. As someone in physics, i would most likely want to contribute comments in my subfield and just view to
48.
by comnetxr 9y ago
Often (in the scientific computing communities that I am in) large tensor contractions are done by reshaping tensors into matrices, transposing, and using matrix multiplication. The contraction time can change dramatically based on the orde
49.
by comnetxr 9y ago
My interpretation of this is that the muon measured radius of the proton is the correct one. This rules out the speculation that the muon measurement was accessing some sort of new physics which caused it to be 4% off. The key quote is here
50.
by comnetxr 9y ago
> So, for example, all users have to take a selfie via the app so their profile can be manually verified to help boost trust and keep out spammers; users don’t have to provide their real name though, and can choose not to display photos