FactChecker's latest activity
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FactChecker replied to the thread Undergrad Find the Number of Triangles.I would consider that to be automating a "brute force counting" method. IMO, although it is not what the OP asked for, it is still an... -
FactChecker replied to the thread Music AI's First #1 Country Hit: Authenticity vs. Traditional Artists.It's true of any music genre that time lets us remember the good ones and forget about the tons of mediocre/bad ones. Our memories are...
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Use the "I dislike this", thumb down, every time you see them post. It has had a corrective effect on what is offered to me.
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We have many threads on AI, which are mostly AI/LLM, e.g,. ChatGPT, Claude, etc. It is important to draw a distinction between AI/LLM...
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FactChecker reacted to Astronuc's post in the thread Undergrad Galaxy MoM-z14 - furthest observed object with
Like.
https://en.wikipedia.org/wiki/MoM-z14 Any photon with energy above 24.6 eV is going to ionize any atom. K, L X-rays would certainly... -
FactChecker reacted to Office_Shredder's post in the thread Undergrad My basic understanding of set theory with Like.
A countable union of countable sets is countable. This means when you say hey I've got infinity infinities, that's gotta be a bigger...
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FactChecker reacted to Hornbein's post in the thread Undergrad My basic understanding of set theory with Like.
Right. Take any two unequal rational numbers x and y. The open set (x,y) -- all rationals between x and y -- is infinite.
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FactChecker reacted to jedishrfu's post in the thread Undergrad My basic understanding of set theory with Like.
Your observation is encoded in Cantor’s notion of aleph numbers, which measure different sizes of infinity. The natural numbers have...
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FactChecker replied to the thread Undergrad My basic understanding of set theory.That's a good observation. There are multiple ways of having infinities within infinities within ... Cantor developed that idea...
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FactChecker reacted to robphy's post in the thread Undergrad Derive the Lorentz transformation in Minkowski four-dimensional spacetime spacetime with Like.
First, I acknowledge what you say about spacetime diagrams being confusing. So, some of my efforts have tried to develop additional...
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FactChecker reacted to pervect's post in the thread Undergrad Relational event horizons? with
Informative.
My $.02. Intuition is great, but - it's just not reliable. The only way to know if your intuition is correct or not is to look at the... -
In flat spacetime (Special Relativity) it's conventional to talk about "observers" or "inertial observers". This often means...
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FactChecker replied to the thread Undergrad Derive the Lorentz transformation in Minkowski four-dimensional spacetime spacetime.This is now my favorite video explanation of the Minkowski diagram. It is great that a school like Stanford makes this available on the...
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FactChecker reacted to Sagittarius A-Star's post in the thread Undergrad Derive the Lorentz transformation in Minkowski four-dimensional spacetime spacetime with
Love.
Derivation of the Lorentz transformation in Minkowski spacetime diagrams: -
FactChecker reacted to martinbn's post in the thread Undergrad Relational event horizons? with Informative.
My favourite popular book is Geroch's "General Relativity from A to B".