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/sci/ - Science & Math

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7930082 No.7930082 [Reply] [Original]

is it just me or are tensors/manifolds impossible?

shits high dimensional geometry on fucking steroids. And all the proofs just seem super hand wavey and basically magic

>pic related, me anytime I get to the stuff

>> No.7930085

>>7930082
>tensors/manifolds impossible?

no they are just ugly. deal with it or study an aesthetically pleasing field instead.

>> No.7930098

>>7930082
Nigga what.

What do you mean by impossible? A Manifold is just a Hausdorff Top. Space with "charts" that map portions of the manifold into R^n.

>> No.7930105
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7930105

>>7930098

>> No.7930118

>>7930082
https://www.youtube.com/watch?v=e0eJXttPRZI&list=PLlXfTHzgMRULkodlIEqfgTS-H1AY_bNtq

>> No.7930127

>>7930118
ok this is good, are there any other channels like this (number theory & combinatorics) if possible

>> No.7930157
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7930157

>>7930082
Think of origami getting blisters that grow in to the acute angle instead of the other... whatever the balls that was called, anyway, this, upon stacking multiple tensors axises creates the vendiagram and then the space in that the vendiagram breeds is a tensor of n in the that, depending on where the the vendiagram gets chopped, breeds a coordinate system of similar to a layered space that can be derived by a lorentz transformation in where all the spaces are unique

That's how I work with them anyways

>> No.7930346

No, they don't seem handwavy at all. Where are you getting these proofs?

>> No.7930370
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7930370

>>7930157

>> No.7930374

>>7930082
nah senpai they're probably the most intuitive higher maff I learned so far

please never ask me about ring theory though fuck that shit. only care about it cause module theory is cool as balls.

>> No.7930430
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7930430

>>7930157

>> No.7930467
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7930467

>>7930157

>> No.7931090

i know the feeling
learning general topology is like learning biology, except there are more things to memorize in topology

>> No.7931111
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7931111

>>7930157

>> No.7931165
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7931165

>>7930082
im with you OP. Trying to learn tensor logic, but when I try to figure out what's really happening, I get stuck in a mind loop and freeze

>> No.7931174

>>7930082
>brainlet gets confused by indices
Jesus Christ just kill yourself

>> No.7931745

>stuff like special relativity is hard
scrubs

>> No.7933407

>>7930118
13 minutes into this video and I finally paused it
I like the lecturer
Are most lecturers as interesting as this guy?

>> No.7933428

>>7930118
good vid

>> No.7933463

>>7930118
>heron's problem
>who has seen this for the first time
>no one
>seen this in class when we were 16
jesus fuck america is great

>> No.7933470

>>7930082
>tensors
I see your problem. You're a physics student. Don't worry about it, you suck at all math. It's just easier to recognize with babby tier differential topology.

>> No.7933481
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7933481

>>7933470
>yfw engineers are better at math than mathfags on this board