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All Mathematicians Please come to this thread

posted
Total Posts
106
B1rd
2,974 posts
Joined December 2013
Topic Starter
B1rd
There is a very complicated mathematical and philosophical problem that needs to be solved.

That is, does 4-5*, as in the context of the title for a multiplayer lobby mean 4.0-5.0*, or 4.0-5.99*, or something else entirely?

This needs to be solved once and for all. Let the debate begin.
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun
4.00 to 5.99. because the title 4*-5* means all 4* maps and all 5* maps.

This issue can be solved by not having a shitty fucking multi name and saying 4.00 to 5.00* or 4.00 to 5.25 or something.
-Makishima S-
2,434 posts
Joined August 2013
-Makishima S-
4.00-5.00
DeathHydra
651 posts
Joined November 2015
DeathHydra
Lol I don't think you should make a topic about this but oh well...

I will assume it's a 4.00-5.99 if the room title is like "4 stars and 5 stars". But if "4 to 5 stars" I will assume that it's a 4.00-5.00.
Believe it or not, I'm quite good with mathematics
Last edited by DeathHydra , edited 1 time in total.
Nabel_old_1
Nabel_old_1
3.50-5.50
TheRealNick24
18 posts
Joined November 2015
TheRealNick24
3.51-5.49
Endaris
5,282 posts
Joined June 2010
Endaris
4.0-5.0 with a margin of tolerance of like 0.25. For some psychological reason people will always pick closer to the higher number because they don't want to look like having small balls or something, i don't know. That's why it effectively plays out like 4.1-5.5*.
I don't know. Just use decimals.

You don't make sense, Khelly, it would be 3.01 to 5.99 if anything.
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun

Endaris wrote:

4.0-5.0 with a margin of tolerance of like 0.25. For some psychological reason people will always pick closer to the higher number because they don't want to look like having small balls or something, i don't know. That's why it effectively plays out like 4.1-5.5*.
I don't know. Just use decimals.

You don't make sense, Khelly, it would be 3.01 to 5.99 if anything.
Why would 4* mean 3.01 and not 4.00+? That doesn't make sense. Any map 3.99 or below does NOT have 4 stars.
B1rd
2,974 posts
Joined December 2013
Topic Starter
B1rd

Endaris wrote:

4.0-5.0 with a margin of tolerance of like 0.25. For some psychological reason people will always pick closer to the higher number because they don't want to look like having small balls or something, i don't know. That's why it effectively plays out like 4.1-5.5*.
I don't know. Just use decimals.

You don't make sense, Khelly, it would be 3.01 to 5.99 if anything.
There can be no margin of tolerance. Even if you allow 0.1 star more it just becomes a slippery slope.
Deva
2,341 posts
Joined December 2014
Deva

[Taiga] wrote:

4.00-5.00
Oh god finally some fucking common sense

OT:

HK_ wrote:

it means 4.00000000000000000000000000000000...1-4.99999999999999999999999999999999999...*
Saphirshroom
627 posts
Joined May 2013
Saphirshroom

Khelly wrote:

Endaris wrote:

4.0-5.0 with a margin of tolerance of like 0.25. For some psychological reason people will always pick closer to the higher number because they don't want to look like having small balls or something, i don't know. That's why it effectively plays out like 4.1-5.5*.
I don't know. Just use decimals.

You don't make sense, Khelly, it would be 3.01 to 5.99 if anything.
Why would 4* mean 3.01 and not 4.00+? That doesn't make sense. Any map 3.99 or below does NOT have 4 stars.
This
Endaris
5,282 posts
Joined June 2010
Endaris

B1rd wrote:

There can be no margin of tolerance. Even if you allow 0.1 star more it just becomes a slippery slope.
Oh, so this is a full meme thread.
Reason:
Because 4-5= -1
This implies that the range of stars is |-1|=1
The only set of 1 that has both 4 and 5 in it is [4;5]

@Khelly: So you are some fucking compiler that is too stupid to round numbers when converting to integer. gg
Last edited by Endaris , edited 1 time in total.
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun

Endaris wrote:

@Khelly: So you are some fucking compiler that is too stupid to round numbers when converting to integer. gg
I don't even get what you're trying to say.
Deva
2,341 posts
Joined December 2014
Deva
lol rip
N0thingSpecial
2,355 posts
Joined November 2015
N0thingSpecial
I don't think maths even play a role in this topic lol since we're not using proper mathematical annotations in the first place
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun

N0thingSpecial wrote:

I don't think maths even play a role in this topic lol since we're not using proper mathematical annotations in the first place
Here I can do non-notation too

4* maps --> All maps that have at least 4 stars and no more than 4.99
5* maps --> All maps that have at least 5 stars and no more than 5.99

4*-5* maps -> 4.00 to 5.99

"4-5" stars as a multi title

Ambiguous since the person reading might assume 4.00 to 5.00 or all 4 star and all 5 star maps.

Solution:

USE BETTER MULTI LOBBY TITLES YOU FUCKS
Last edited by Yuudachi-kun , edited 2 times in total.
DeathHydra
651 posts
Joined November 2015
DeathHydra
Suddenly this topic is popular. I guess everyone is a mathematician
Saphirshroom
627 posts
Joined May 2013
Saphirshroom

Endaris wrote:

@Khelly: So you are some fucking compiler that is too stupid to round numbers when converting to integer. gg
Every single compiler of every relevant programming language ever truncates when casting floating point to integers and doesn't round. (Also, this is the exact reason why I too think that 4-5* means 4.0 to 5.99.)
Khelly is right.
Endaris
5,282 posts
Joined June 2010
Endaris
Or they use the definition by the difficulty-grouping and think it is 3.5-5.5
N0thingSpecial
2,355 posts
Joined November 2015
N0thingSpecial
Wait let me ask a friend who is actually studying maths as a degree
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun

Endaris wrote:

Or they use the definition by the difficulty-grouping and think it is 3.5-5.5

I never liked that rounding system to begin with. As an example, can you agree that I have a 7 star fc because of my #1 play because it's 6.8*? I don't.
-Makishima S-
2,434 posts
Joined August 2013
-Makishima S-
4*-5* maps -> 4.00 to 4.99
You don't exclude last number in stack. Same as you cannot exclude first number from it.

[4* - 5*] = {4.00, 4.01, 4.02, ... , 4.98, 4.99, 5.00}
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun

[Taiga] wrote:

4*-5* maps -> 4.00 to 4.99
You don't exclude last number in stack. Same as you cannot exclude first number from it.

[4* - 5* ] = {4.00, 4.01, 4.02, ... , 4.98, 4.99, 5.00}
I mistyped there 5.99 as 4.99 then I changed it to 5.00 because you confused me.
Last edited by Yuudachi-kun , edited 1 time in total.
Sayorie
975 posts
Joined December 2014
Sayorie


Are we done?
KanoSet
906 posts
Joined October 2014
KanoSet

B1rd wrote:

There is a very complicated mathematical and philosophical problem that needs to be solved.
xd
from a philosophical view it's 3.5 - 5.5 because that what 4* and 5* taps have
Endaris
5,282 posts
Joined June 2010
Endaris

Arthraxium wrote:



Are we done?
Consider calculating the arithmetic mean of 4 and 5 as the sup and inf of our set
Then take the integral from 4 to 5 over the sinus of our arithmetic mean multiplied with pi.
Last edited by Endaris , edited 1 time in total.
DeathHydra
651 posts
Joined November 2015
DeathHydra

Arthraxium wrote:



Are we done?
Wow.

The image means 4.00-5.99 if anybody doesn't know
Deva
2,341 posts
Joined December 2014
Deva
[iimx->4+f(x), limx->5-f(x)] :/
Dont laugh, at least i tried
Sayorie
975 posts
Joined December 2014
Sayorie
To clarify, "4*-5*" can be really misleading, because there are two meanings which can be interpreted behind this:


Which means all the beatmaps between 4.0-5.0 star rating

or


Which means the set of all the 4-star beatmaps (beatmaps with 4 as the leading integer), plus all the 5-star beatmaps.

So the solution is to tell those MP basturds to clarify what they mean with the title.
DeathHydra
651 posts
Joined November 2015
DeathHydra
Or just make a room and don't rotate host. Therefore the title will always be right for you.
Sayorie
975 posts
Joined December 2014
Sayorie
I don't multi, so I'm all gud.
Yuudachi-kun
5,432 posts
Joined August 2014
Yuudachi-kun

Arthraxium wrote:

I don't multi, so I'm all gud.
Deva
2,341 posts
Joined December 2014
Deva

Arthraxium wrote:

I don't multi, so I'm all gud.
Good idea. I will follow your example.
-Makishima S-
2,434 posts
Joined August 2013
-Makishima S-
CE + dont buy supporter = perfect excuse to not go into multi
chainpullz
2,334 posts
Joined June 2013
chainpullz

B1rd wrote:

There is a very complicated mathematical and philosophical problem that needs to be solved.

That is, does 4-5*, as in the context of the title for a multiplayer lobby mean 4.0-5.0*, or 4.0-5.99*, or something else entirely?

This needs to be solved once and for all. Let the debate begin.
4-5 typically translates to [4,5] \in \R unless you say "4-5 exclusive" in which case it translates to (4,5). So no, anything >5 would not be included.
TMiracle
167 posts
Joined December 2011
TMiracle

Arthraxium wrote:


.
If only there was a way to put this equation in the lobby name.
Jellyfish McGub
220 posts
Joined November 2014
Jellyfish McGub
it actually means 5-6

(but what is 5-6??)
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