ellis-bell

18 ms·

1.
by ellis-bell 4y ago
Well, wouldn't the program itself be an input on which a human is unable to determine the result (i.e., if the program halts)? I'm curious on your thoughts here, maybe there's something here I'm missing. The function we
2.
by ellis-bell 4y ago
it's a _necessary_ but _not sufficient_ condition for a recession. so it does provide you information. if the yield curve does not invert, it is unlikely there will be a recession.
3.
by ellis-bell 5y ago
lepton number does not need to be conserved. it is an approximate symmetry of nature. if lepton number were conserved, neutrinos could not oscillate. quarks, the particles composing protons and neutrons, have fractional charge; these would
4.
by ellis-bell 5y ago
mesons are composed of two quarks and can have neutral or non-neutral charge. baryons are composed of three quarks and can have neutral or non-neutral charge. both mesons and baryons are classified as hadrons charge, baryon number, isospi
5.
by ellis-bell 5y ago
I'm not sure what courses they had in mind, but Victor Shoup (one of the authors of the OP) has a book on number theory and algebra that goes over probability. That would probably be most useful if your goal is to study the applied cry
6.
by ellis-bell 5y ago
a huge part of it is trying to solve / formulate easier versions of the problem, or problems that are similar or related to the original problem. Or making some stronger assumptions to get rid of the clutter / all of the moving
7.
by ellis-bell 5y ago
but then the heap would grow down in such a diagram... btw my understanding is that the heap came first in the logical development of C and other systems programming. so it made sense to have .text and other program data at the lowest virtu
8.
by ellis-bell 5y ago
agreed that pivoting can be a pain. a pattern that i converged on --- at least in postgres --- is to aggregate your data into json objects and then go from there. you don't need to know how many attributes (columns) should be in the re
9.
by ellis-bell 6y ago
XOR is used a ton in the theoretical underpinnings of cryptography. It's used in the one time pad which is essentially the "smallest" cryptographic scheme that is perfectly secure (perfectly secure has a mathematical definiti
10.
by ellis-bell 6y ago
chess is actually not very easy to check. chess is in exp, the class of problems requiring exponential time to solve and exponential time to check. unlike p vs np we do know that exp \neq p.
11.
by ellis-bell 6y ago
i second tristan needham's visual complex analysis. some other good ones: * the one we used in my undergrad course was fisher's complex variables which is great if you're learning for the purposes of applications. it's a
12.
by ellis-bell 6y ago
you might be able to do something like "predict the next prime number" or "predict the next zero of the Riemann zeta function". you could try something like this for statements in a formal axiomatic system, but know that
13.
by ellis-bell 6y ago
think more like you're on the surface of the balloon as it's getting inflated. the "fabric" or elastic material on which you're standing is the thing that's expanding while the balloon inflates. you're sti
14.
by ellis-bell 6y ago
hah i was taught that style is "pointless"... it comes from topology, no?
15.
by ellis-bell 6y ago
Incidentally one of the biggest benefits I see of using a text editor like vim / emacs is that it really encourages good code management. It's not to save the ~10 minutes per year in faster key strokes to manipulate your code. It&
16.
by ellis-bell 6y ago
probably circuit satisfiability and related hard problems are all reducible to each other
17.
by ellis-bell 6y ago
hah yeah "dynamic programming" has turned out to have a fortunate name
18.
by ellis-bell 6y ago
not necessarily. it could. but if x and y are truly uncorrelated variables that are observed with unlimited precision, then you still would not reject the null that they are uncorelated
19.
by ellis-bell 6y ago
i think it's largely culture. academics are "graded" based on how many papers they publish. depending on your geography, quality matters too. but in most cases they aren't measured by how much non-peer reviewed publicati
20.
by ellis-bell 6y ago
You are right that Raft and Paxos provide for distributed consensus. However, they don't do so in an open, byzantine environment where some fraction of the nodes in the network may not be honest. edit: there are byzantine variants of p
21.
by ellis-bell 6y ago
makes sense! fwiw, i have not tried to use libreoffice for any heavy lifting, unfortunately (fortunately?). i tend to use bash utils for that, and i 100% do not think telling people to "just use grep / awk / perl and csvcut&q
22.
by ellis-bell 6y ago
LibreOffice Calc is free and doesn't corrupt data. It also has full support of UTF8
23.
by ellis-bell 6y ago
i wonder if it's a folk theorem kind of thing? i heard something similar from one of my physics professors back in undergrad
24.
by ellis-bell 6y ago
also because there is a fixed amount of land (like literally the surface of the earth occupies a finite area at least on human time scales) and because building housing stock takes time and because of zoning restrictions and other instituti
25.
by ellis-bell 6y ago
a slumlord could then just hike the rent up by ubi(ish) dollars oh, all my tenants have an "extra" $2,000 a month? they can pay more. housing is inelastic so tenants are the ones who have to bear the increase.
26.
by ellis-bell 6y ago
the theoretical reasons for not increasing minimum wage is not inflation. it's a decrease in employment. empirically, however, things are sticky and so we have not observed concomitant decreases in employment with (small to moderate) i
27.
by ellis-bell 6y ago
they won't be equal because not all ubi income will be spent on consumption. it will stimulate consumption, however, which was the primary reasoning behind the op and that will lead to some form of inflation edit: inflation because bas
28.
by ellis-bell 6y ago
correct, 90% of people make more than $1.90 ppp according to the data. but only 35% make more than $10 a day. the poverty line is defined generously at ~$2 / day by most oecd countries, but making above the poverty line does not make y
29.
by ellis-bell 6y ago
everything is a simplification. of course it's not spontaneous, but that is literally the word used by physicists to describe the phenomenon. what does the wave equation of the electron in a hydrogen atom look like during "spontan
30.
by ellis-bell 6y ago
the whole efficient markets argument requires pressure in both directions. no one is short selling farmers. just like how if a house is overpriced and real estate investors believe it that doesn't mean there's going to be adequate

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