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/sci/ - Science & Math

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1786102 No.1786102 [Reply] [Original]

How do you find the interior of a set like the set of rational numbers? Also, how about its boundary?

Pi always related.

>> No.1786138

bump

>> No.1786161

empty
no open balls :(

boundary is all of them I guess

>> No.1786168

Oh look another actually funny pic ruined by someone feeling the need to strap nonsensical motivational meme comments on it

>> No.1786186

>>1786161

How do you know that there are no open balls? I mean, how do you visualize the set of rational numbers to be able to determine that?

>> No.1786197

>>1786186
Every interval contains an irrational number.

>> No.1786203
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1786203

>>1786168
faux motivators and reaction pics with text need to die