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Q&A

General Q&A about all branches of theoretical and applied mathematics, including closely-adjacent sciences where the central question is about the math.

60%
+1 −0
How's it possible to arrange 0 objects? How can 0! = 1?

3 answers  ·  posted 10d ago by DNB‭  ·  edited 7d ago by Quintec‭

50%
+0 −0
71%
+3 −0
Are we in a "history-valley" for Topology?

2 answers  ·  posted 19d ago by whybecause‭  ·  last activity 19d ago by Derek Elkins‭

50%
+1 −1
50%
+1 −1
Acceptable, usual to write $\ge 2$ pipes simultaneously?

1 answer  ·  posted 28d ago by DNB‭  ·  last activity 25d ago by Derek Elkins‭

71%
+3 −0
33%
+0 −2
33%
+0 −2
How do mathematicians measure area for points?

1 answer  ·  posted 2mo ago by JohnDoea‭  ·  last activity 1mo ago by zavier‭

40%
+0 −1
60%
+1 −0
What does upper indices represent?

2 answers  ·  posted 3mo ago by Anonymous‭  ·  last activity 1mo ago by r~~‭

50%
+0 −0
What is the parallel for edges?

1 answer  ·  posted 2mo ago by JohnDoea‭  ·  last activity 2mo ago by r~~‭

33%
+2 −6
Can we add without using addition?

3 answers  ·  posted 3mo ago by IDoYTSoSubHaha‭  ·  last activity 2mo ago by DavidCary‭

28%
+0 −3
57%
+2 −1
Third kind of infinite

1 answer  ·  posted 2mo ago by Estela‭  ·  last activity 2mo ago by r~~‭

28%
+0 −3
50%
+0 −0
50%
+0 −0
40%
+0 −1
66%
+2 −0
60%
+1 −0
What it ≡ called?

1 answer  ·  posted 4mo ago by Anonymous‭  ·  last activity 4mo ago by Quintec‭

50%
+0 −0
71%
+3 −0
What're the orders for equation expressing?

2 answers  ·  posted 5mo ago by IDoYTSoSubHaha‭  ·  last activity 5mo ago by r~~‭

28%
+0 −3
Why aren't the "21 possibilities here" NOT equally likely?

1 answer  ·  posted 6mo ago by DNB‭  ·  edited 5mo ago by Wolgwang‭

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