joe__f

15 ms·

181.
by joe__f 4y ago
Well, there are many different methods and certainly some are based on numerical integration as you say. The most simple method based on finite difference derivatives is Euler's method which uses the scheme given by OP, with error O(h)
182.
by joe__f 4y ago
I'm happy to answer your question, but I'm not sure what you're asking
183.
by joe__f 4y ago
I think it's a bit of a feature of quanta magazine's approach to science journalism (and probably the current zeitgeist in science journalism in general). If you want to make work like this accessible then it's necessary for
184.
by joe__f 4y ago
I have a PhD in this field. I understood everything in the title straight off, apart from the context of which 'parity preserving surface' they were talking about (which was fine). I think this was a concise and well-written abstr
185.
by joe__f 4y ago
Great question! This result is in the same area as the work on the amplituhedron. It's not immediately obvious to me that they are directly related, and I didn't see a reference to any amplituhedron papers in the citations of this
186.
by joe__f 4y ago
I finished up my PhD in scattering amplitudes recently. I checked out the abstract of this paper, and it certainly looks like an interesting result and will likely be the basis for new results in the field. For perspective, I estimate that
187.
by joe__f 4y ago
Finite difference derivatives are the basis for a range of numerical methods for solving differential equations. Given that these techniques underpin various areas of modern engineering, I'd say your statement that 'differentiatio
188.
by joe__f 4y ago
If you're interested in how to best calculate derivatives numerically using a finite difference rather than an infinitesimal, try having a look at the Wikipedia page on numerical differentiation. The punchline is that you can control t
189.
by joe__f 4y ago
Did this manual ship with the console? Or was it just for repair guys?
190.
by joe__f 4y ago
What would be an example of someone who claims that they need a safe space, but does not deserve understanding and help? I'm not sure about shaping all of society, but it seems reasonable to me that there would be many other people wit
191.
by joe__f 4y ago
I'm making a statement about all possible experimentally measurable quantities, which as you pointed out have a finite precision and so can be represented as having terminating decimal expansions. This as far as I'm aware this is
192.
by joe__f 4y ago
What's your objection to people needing spaces where they feel safe? I'm currently healing from PTSD and I can get triggered by a wide range of different situations and have flashbacks which last hours. I attend a community centre
193.
by joe__f 4y ago
I always press reject all, and if it doesn't let me use the site I find a different one normally
194.
by joe__f 4y ago
I think you're saying that all physically measurable quantities are rational numbers with terminating decimal expansions. The set of rational numbers with terminating decimal expansions is a subset of the set of rational numbers, so my
195.
by joe__f 4y ago
Yeah, all this modern stuff is too rational for me
196.
by joe__f 4y ago
Probably just that, all physically measurable quantities are rational, and the rational numbers have measure zero in the reals
197.
by joe__f 4y ago
To my understanding, the EU cookie law has mostly been met with malicious compliance; now I get a pop-up window on nearly every web page I visit asking me if I'm happy to accept their tracking cookies. Does anyone have thoughts on how
198.
by joe__f 4y ago
Seems to be that the conclusion to this article is 'maybe yes' though
199.
by joe__f 4y ago
I often don't sleep much. I roughly follow your 'don't stay in bed for more than 20 minutes if you're not sleeping' rule. My reasoning is something like, 'if you're lying in bed and _trying_ to sleep, it m
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by joe__f 4y ago
I liked Stumbleupon, I miss it too
201.
by joe__f 4y ago
Hey that's awesome! When I was a teenager I learnt C++ so I could code on a Zelda fan game engine. Why did you guys want to learn assembly?
202.
by joe__f 4y ago
a^bc is ambiguous and could mean c × a^b. I encourage you to use a^(bc) to format this operation
203.
by joe__f 4y ago
I got why scissors cut paper, but I'm always stuck wondering why paper wraps rock...
204.
by joe__f 4y ago
In the UK it's normal for schools to start around 9am. I thought this was some kind of avant gate experiment letting teens start at 11am, I would've loved that at 15. I didn't realise schools started so early in the states, 7
205.
Fascia: The long-overlooked tissue that shapes your health(newscientist.com)
2 points by joe__f 4y ago|0 comments
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by joe__f 4y ago
Oh hey! I finished up my PhD in particle physics recently, just taking a break now. Nice to see that 2.5 finally came out, we were working on betas after 2.1 the whole time I was around
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by joe__f 4y ago
Oh this is super exciting! I used to be on the dev team for ZC as Joe123 back when I was a teenager, I mostly worked on the scripting language. I left the community about 10 years ago and I haven't seen anything about it since then. It
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by joe__f 5y ago
Oh I didn't realise the eta was the index, I was reading the sum as over i on the right hand side
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by joe__f 5y ago
Does anyone recognise the equation from the Aphex Twin track? ∆Mᵢ⁻¹=−α ∑ Dᵢ[η][ ∑ Fjᵢ[η−1]+Fextᵢ [η⁻¹]] With the ∆M and the sum over Fs, I wondered if it might be something to do with rocket dynamics derived from Newton's second law?
210.
by joe__f 5y ago
When you say "make sure you are getting n years of experience and not one year of experience n times", do you mean to try and work on something different each year? Or did you mean something else?

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