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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.

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83%
+8 −0
Classification of topological points

1 answer  ·  posted 2y ago by celtschk‭  ·  last activity 2y ago by Ezekiel‭

83%
+8 −0
81%
+7 −0
When and how should the $Z_n^2$ statistic be used?

1 answer  ·  posted 2y ago by HDE 226868‭  ·  last activity 2y ago by HDE 226868‭

80%
+6 −0
80%
+6 −0
Why always rationalize a denominator?

3 answers  ·  posted 2y ago by msh210‭  ·  last activity 2y ago by Derek Elkins‭

80%
+6 −0
Discrete data: Graphs and skewness

2 answers  ·  posted 2y ago by Nezar ‭  ·  last activity 2y ago by 1muflon1‭

80%
+6 −0
How to show if a set is simply connected?

1 answer  ·  posted 2y ago by kreijstal‭  ·  last activity 2y ago by Derek Elkins‭

80%
+6 −0
77%
+5 −0
Similar triangles with the same area

2 answers  ·  posted 2y ago by msh210‭  ·  last activity 2y ago by DonielF‭

77%
+5 −0
Which of the multiple definitions of correlation to use?

0 answers  ·  posted 2y ago by Mithrandir24601‭  ·  last activity 2y ago by r~~‭

77%
+5 −0
75%
+4 −0
75%
+4 −0
75%
+4 −0
In $P(X\leq q)$, what do we call $q$?

1 answer  ·  posted 2y ago by anoldmaninthesea‭  ·  last activity 2y ago by gramps‭

75%
+4 −0
Using maximum of forecasted values to forecast maximum

1 answer  ·  posted 2y ago by Guilherme Costa‭  ·  last activity 2y ago by Stephan Kolassa‭

75%
+4 −0
Optimising a 3 value problem (well 2 really)

1 answer  ·  posted 12mo ago by KalleMP‭  ·  last activity 12mo ago by Peter Taylor‭

75%
+4 −0
Missing a solution: Are A and B always equal if A-B=0

3 answers  ·  posted 1y ago by re89j‭  ·  last activity 1y ago by tommi‭

75%
+4 −0
75%
+4 −0
Generalization of categorical product

1 answer  ·  posted 4mo ago by r~~‭  ·  last activity 4mo ago by Derek Elkins‭

75%
+4 −0
Is this formula for the minimal sum correct?

1 answer  ·  posted 8mo ago by celtschk‭  ·  last activity 7mo ago by celtschk‭

71%
+3 −0
71%
+3 −0
Matrices with rotational symmetry

1 answer  ·  posted 1y ago by Peter Taylor‭  ·  last activity 1y ago by Peter Taylor‭

71%
+3 −0
Notation for nested exponents

1 answer  ·  posted 12mo ago by JRN‭  ·  last activity 11mo ago by leovt‭

71%
+3 −0

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