Question

There's a real between any two rationals, a rational between any two reals, but more reals than rationals?

score 3.6k · Answer 1 · 2012-03-26 01:20:22

3.6k

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There's a real between any two rationals, a rational between any two reals, but more reals than rationals?

Published on 26 Mar 2012 - 1:20

score 251 · Answer 2 · 2012-04-02 05:33:58

251

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Finding a finite integer in infinite space

Published on 02 Apr 2012 - 5:33

score 170.4k · Answer 3 · 2026-03-27 16:55:31

170.4k

Views

I have learned that 1/0 is infinity, why isn't it minus infinity?

Published on 27 Mar 2026 - 16:55

score 716 · Answer 4 · 2012-04-03 13:40:55

716

Views

Is $\infty$ enough or do I need to write $+\infty$

Published on 03 Apr 2012 - 13:40

score 1.9k · Answer 5 · 2026-04-04 02:32:08

1.9k

Views

Why do some divergent series apparently seem to converge (e.g. Grandi's series)?

Published on 04 Apr 2026 - 2:32

score 23k · Answer 6 · 2012-04-12 07:07:49

23k

Views

Isn't there a bijection between real numbers and natural numbers?

Published on 12 Apr 2012 - 7:07

score 2k · Answer 7 · 2012-04-13 02:27:06

2k

Views

Why does it matter to approach zero from the left or right in 1/0?

Published on 13 Apr 2012 - 2:27

score 253 · Answer 8 · 2012-04-13 16:50:09

253

Views

Evaluation of $\sum_{x=1}^{\infty}x^{-x}$

Published on 13 Apr 2012 - 16:50

score 731 · Answer 9 · 2012-04-15 21:50:36

731

Views

What does universal quantification mean?

Published on 15 Apr 2012 - 21:50

score 209 · Answer 10 · 2026-04-02 20:53:16

209

Views

Can the ongoing need for a meta language be stopped by a loop?

Published on 02 Apr 2026 - 20:53

score 249 · Answer 11 · 2012-05-03 21:12:11

249

Views

Infinite or unknown?

Published on 03 May 2012 - 21:12

score 3.2k · Answer 12 · 2026-03-30 02:12:11

3.2k

Views

What did Gauss think about infinity?

Published on 30 Mar 2026 - 2:12

score 410 · Answer 13 · 2026-03-30 02:07:53

410

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Equivalence of sequences and subsets of natural numbers

Published on 30 Mar 2026 - 2:07

score 1.3k · Answer 14 · 2012-05-09 18:14:46

1.3k

Views

Limits of $f(x)=x-x$

Published on 09 May 2012 - 18:14

score 12.4k · Answer 15 · 2012-05-17 00:01:27

12.4k

Views

Is the infinite root of any number equal to $1$?

Published on 17 May 2012 - 0:01

List Question

There's a real between any two rationals, a rational between any two reals, but more reals than rationals?

Finding a finite integer in infinite space

I have learned that 1/0 is infinity, why isn't it minus infinity?

Is $\infty$ enough or do I need to write $+\infty$

Why do some divergent series apparently seem to converge (e.g. Grandi's series)?

Isn't there a bijection between real numbers and natural numbers?

Why does it matter to approach zero from the left or right in 1/0?

Evaluation of $\sum_{x=1}^{\infty}x^{-x}$

What does universal quantification mean?

Can the ongoing need for a meta language be stopped by a loop?

Infinite or unknown?

What did Gauss think about infinity?

Equivalence of sequences and subsets of natural numbers

Limits of $f(x)=x-x$

Is the infinite root of any number equal to $1$?

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