How many holes?

ITS 1 FUCKING HOLE, YOU RETARDS.

>it’s one holocaust and a hole in the ground is only a “container”.

Such bullshit excuse.

>muh it’s in topology

No it’s not, I have read everything in topology to read and it actually mentions that holes are defined as:
A place where things such as vacuum can take place.

So vacuum can take place in the top and in the bottom.

>if you flat it out in a disc thing you would have a flat circle.

Yeah and if you do that to the hole in the ground it does to. Plus if you take the straw and bend it over itself and flip it, then turn it. You get two holes.


DEBUNKED

Other urls found in this thread:

mathworld.wolfram.com/Hole.html
en.m.wikipedia.org/wiki/Pasting_lemma
twitter.com/SFWRedditGifs

if you flatten out a hole in the ground you have flat ground, not a hole.

Let's say you have a ring that has one hole. Now, have infinite amount of such rings, and you have infinite amount of holes in total. Now, put the rings one after another; you get a pipe. The amount of holes is still the same.

>b-but if the pipe has finite length, there can't be infinite amount of holes and rings
There can, because there are infinite amount of real numbers between 0 and 1. Thus, a pipe of 1 cm has infinite amount of rings if the rings are infinitely small.

>it’s one holocaust

Your auto-fill clearly shows where you came from.

You don't get a pipe since there are gaps between the rings.

By OP's autismo logic, girls only have two holes I can stick me willy in, since their anus/mouth is actually one hole.

Guess all those gangbang videos I've seen with girls getting triple dicked take place inside a black hole or some shit.

It's a multi-vectored tube of both regular and irregular lengths and diameters. Creating a vacuum within the structure is irrelevant. 1 straw = ?

Topology doesn't allow glueing different objects together since homeomorphisms preserve connected sets.

Strawman

Each ring has two holes and when you put them to gather you shut two holes And unite them to form a wider ring with two holes... yawn

No my point is that there are 2

1 straw equals 2 holes

Straw is homeomorphic to a torus, therefore one hole

What do you mean topology doesn't allow glueing objects? And what do you think quotient spaces are? They are constructed by glueing couple different points into one. For fuck's sake, learn some actual topology and stop saying this numberphile-tier shit

Well first you must ask, what is a hole? An opening or the whole pathway?

If you talk about the image, it has only one hole, correct
kind of wrong kind of not, depends on what you mean by "put the rings one after another" but since you want to construct a pipe, you get one hole in total with that.

1 straw equals one hole you mongoloid, the fundamental group is Z

Incorrect

Jesus Christ no it's not, and on top of that a torus has two holes, a straw only has one

not an argument

>No it’s not, I have read everything in topology to read and it actually mentions that holes are defined as:
>A place where things such as vacuum can take place.

10/10 holy fucking kek

>stating the fundamental group is not an argument
go back to your highschool maths

A straw has two*

Correct. Walls of the straw have non-zero thickness, and contracting the straw along its length and stretching it sidewards transforms it into a torus

A straw is homotopicly equivalent to S^1.

>stating opinions are facts

Go back to pol nugger

A "real straw" would give you a filled torus, which has one hole yea

Torus has just one hole

S^2*

>a straw has no opening
sure buddy

fucking a women is topologically equivalent to fucking a doughnut

A filled Filled torus wouldn’t have any holes becuase it’s filled, you are not even trying

I cannot believe this thread, is there some other kind of topology that nobody told me about or are we talking about the mathematical one

Are you saying that the arguments in this thread are full of hole?

>A filled Filled torus wouldn’t have any holes becuase it’s filled, you are not even trying
10/10

>tfw you will never affix a doughnut to qt3.14's vagoo and have sweet simulated threesome sex

why even live

No it has 2 and 2 holes (peace and blessings be open him)

Please define a hole for me, you are clearly using a different definition. I am talking about homotopy.

I’m using the correct definition

>I won't tell you
So you were trolling me this hole time

Not at all. I was addressing a specific claim in the OP.

No ok here’s the definition: a place where vacuum can exist

Define vacuum

Fallacy: insult

A place without yo smelly nigga ass

A place that’s empty*

well I am using this definition
mathworld.wolfram.com/Hole.html
I don't know what "a place that's empty" is supposed to mean, be precise.

>I don't know what "a place that's empty" is supposed to mean

That’s because you are retarded

WTF DO YU THINK I MEAN, A PLACE WITH NOTING IN IT NIGGA. Completely empty not even a atom in there

Nice comeback, anyways, I believe physicists or whatever you are use a different definition from mathematicians.
Not mathematicly precise.

>Nice comeback, anyways, I believe physicists or whatever you are use a different definition from mathematicians.

I know, you wanna suck my cock and lick my asshole clean but cut to the chase.


>b-b-but u dydnt explain yt meth-ematicly

Kys, faggot

I already cut to the chase earlier when I posted a link to the mathematical definition you imbecile

It's a donut

Sure you did

Are you taking about a fucking drinking straw? Even topologically it only has one hole -- it's homotopy equivalent to a circle.

Note I was trolling there is only one hole.
Memed

No it doesn't. There's the obvious hole and then the hole from the empty space "inside" the surface. Sort of like the air inside an inflated inner tube.

You are late to the party, apparently these physocists invented their own topology or something

I hate you, but well played

Do you all fuckers agree that a disk with a hole in the middle has only one hole??? Because a fucking straw is the same thing and therefore has only 1 hole.
>Picture related, spent like 4 minutes on this so be appreciative

If you cut the straw it becomes 2D.

Straw has one whole. :)

Not an argument

>be waiter at diner
>regular day, a bit warmer than usual
>serve orange juice and pancakes to some old guy
>he looks extremely bored
>stare at him from a distance for a while, think I've seen him before
>It's Ed Witten
>he notices
>"Hey waiter!"
>come up, say I'm sorry
>"No need, I just really need someone to talk to"
>asks me for my name, tell him
>he picks up the straw from his drink
>"Tell me user, how many holes does this straw have?"
>it's open on both ends, so two
>"user, everyone knows a straw is homeomorphic to their anus"
>but my anus only has one hole
>"That's a trivial problem"
>he signals the other staff
>one of them bars the doors, the rest hold me down
>Ed takes a plastic knife from his plate
>literally tears me a second asshole
>unimaginable agony, scream at the top of my lungs the whole time
>i lay there, too weak to move any of my limbs
>pic related is the last image i see before i bleed out

one hole and the hole is open on both sides. fuck you all

>what is euler characteristic

Wait people actually argue about this?

I have an 89 IQ and a straw has only one hole.

so this thread is just about arguing on the definition of a hole? lol?

>yfw you realize that the straw is homeomorphic to the sphere with 2 points punctured so it does indeed have 2 holes

So if you closed one side there would be one hole stillor half a hole? And then if you open a new hole in the end again its still one hole?

>I know topology
>a hole is a place where a vacuum can take place
Just give up, OP. You're an idiot.

Except the twice-punctured sphere is homomorphic to the punctured plane, which only has one hole.

technically 0 holes

not homomorphic, but homotopy equivalent

well fuck me, just realized S^2 without two points is actually homeomorphic to the punctured plane lmao

anyone with a knowledge of straws and how they are made will know this is correct

Topologically, yes.

A straw has 1 hole. Why does this thread exist?
>Plus if you take the straw and bend it over itself and flip it, then turn it. You get two holes.
What the fuck does this even mean. This is not an intelligble way of communicating direction. Bend by how much, turn by how much, flip it where, on its side?

If you take a cylindrical straw, dip it in ink then press it against paper, you will get a hollow circle imprint and this acts as a cross-section of the straw or if the straw was squished to have zero height. 1 hole. If you bend it or change the angle from anything that is relative to the single axis you're measuring and then attempt to squash to zero height, you will get no holes - not two.

Seriously what is this thread. The OP says 1 hole then also says 2 holes.

Typo. I meant homEomorphic.
OP is baiting or really stupid.

How many sides does it have?

This answer will tell you how many holes it has.

lmao

Such disc has two holes, one in the middle and one outside of it

>t. wikipedia page graudate student

2 holes obviously

>babby's first topology

1 hole.

>assuming the existence of an ambient space

No holes. Holes aren't real wake up sheeple

they aren't, asshole. those are homotopy equivalent spaces

en.m.wikipedia.org/wiki/Pasting_lemma

A straw contains all its limit points, this is not true for a punctured sphere.

you realize that the notion of limit points depends on the ambient space, right? that's not the reason.

No hole at all. There is no possible vacuum inot a straw, because it is connected with the outside. A torus has no hole either. Learn your definitions you brainlets