Archived threads in /sci/ - Science & Math - 1107. page

Not an actal problem

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>>8530490
k

>>8530485
>we stop
What do you mean by "we", Peasant?

BUMP !

>>8530389
it is a subfield of topology

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>>8530389
Knot theory is a meme.

Studying knots isn't applicable in real life in any capacity. Everybody already knows how to tie their shoes.

Bose-Einstein condensates are just atoms that have been cooled to close to 0K (I think the final temperature is measured in nK).

As far as I'm aware there are no applications outside research, where they are other used to study the quantum effects of matter.

>>8529901
They can be used to make acoustic black holes m8

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>>8529901

where is that pic from? Search by image gets nothing.

>Flat earth isn't wrong but globe earth isn't right
I can see this

>tfw to intelligent for more than 2 dimensions

This makes more sense than I'm willing to admit right now

cus ther 2 dum

>>8528068
Who said they couldn't communicate with us in a deep way? Look at elephants who mourn when their relatives die or dolphins that will rape other dolphins for "fun".

>>8528072

>Who said they couldn't communicate with us in a deep way?

The closest we have to actually speaking with a non-human animal is a gorilla who maybe knows some sign language although there are also a lot o researchers claiming the Koko sign language thing is bullshit and that the handler just over-interprets random gestures into meaningful statements.

>>8527766
no-one grasps their "field". which is why it is a "field"

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>You can't separate dy from dx

>>8527766
There is no difference between conscious or non conscious observers.

Einstein is dead to me

>>8525950
he's dead to himself too

>>8525950
>being a brainlet

The implications for the multiple simulations theory therefore seems to be that each simulation can only run inside a universe that is orders of magnitude more complex than itself, because it would require constructing a computer that is orders of magnitude more complex than the entire size of the universe.

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>>8513716
o hai

>>8513735
Hi

care to elaborate?

Hint: The property 'a is even' can be translated to the statement 'a=2k for some integer k'.

>>8531116
Let a,b be in A, what do a and b look like? And what does the binary action on them look like?
For associativity,
(a*b)*c=(a+b-ab)*c=a+b-ab+c-(a+b-ab)c=a+b-ab+c-ac-bc+abc
a*(b*c)=a*(b+c-bc)=a+b+c-bc-a(b+c-bc)=a+b+c-bc-ab-ac+abc
which is the same.
Yes, 0 is even.

>>8531117
I've said this

a+b-ab in the group Z is equal to 2(a+b-ab) in the group we are given in the question

so this proves they're even, but how do I prove they're whole?

how can a function be discontinuous if it's the sum of continuous functions?

>>8531028
>continuous everywhere but differentiable nowhere
https://en.wikipedia.org/wiki/Weierstrass_function

> discontinuous if it's the sum of continuous functions
because infinity is unwieldy

>>8531033
Because it's not absolutely continuous

>nearly no radius

Plz explain

No.

>>8530927
The atom is not a miniature solar system

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Sounds nice.

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>>8530885
So should we just get rid of all flat keys? What is the point of them, they are stupid. They can't compare to superior sharp keys.

>>8530890
you don't get it.

they don't disappear. they aren't destroyed. the notation changes.

Draw up the entity-relationship diagram between your variables and then fit a hierarchical model (arrows become conditional distributions)

for more info, 'structural equation modeling' (SEM) is the term you should be reading up on

What you're proposing (defining latent variables and using EM) is based on the same ideas as machine learning, in that you'll end up with some kind of black box that is a "model" in name only. But if that's what you want then I'm not going to stop you.

>>8530893
I was actually giving a look at "New Developments and Techniques in Structural Equation Modeling" before making this thread, but they seem to care too much about things that I don't (giving meanings to latent variables for example). All I want is an analytical formula for a joint distribution that makes sense (captures the relationships between observed variables)

If I have say, 3 variables (age, marital status, gender) I can simply build a contingency table for the categorical values and fit a normal distribution for age for each combination in the table, but with increased number of observed variables the number of parameters increases exponentially and the "contingency tensor" would become very sparse. I just want an alternative for that

Everyone in ancient Greece was throwing around guesses about all kinds of shit. Of course some of them were right.

>>8530703
More than a few were right.

It might come as a shock to some, but ancient philosophers did quite a bit more than drink all day and make up bullshit explanations for things. They were very much the scientists of the day, and would form hypotheses based on their observations and musings.

You don't give them enough credit.

>>8530696
Cool story bro.

>>8530625
LOL. The best applications I've seen for fuzzy logic usually involve systems that will yield too many solutions. The solutions can be narrowed down to optimize the next logical/mathematical step.

>>8530625
the second graph is the only one that I would have trouble accepting, since you can't be 'about' constant motion.

>>8530625
it makes sense, because being close and very close is all relative.

The middle graph is bullshit, you can't be about constant you are either at a constant speed or you aren't