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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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86%
+11 −0
83%
+8 −0
Classification of topological points

1 answer  ·  posted 4y ago by celtschk‭  ·  last activity 4y ago by Technically Natural‭

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

1 answer  ·  posted 4y ago by HDE 226868‭  ·  last activity 4y ago by HDE 226868‭

statistics
80%
+6 −0
80%
+6 −0
What is special about the 11-cell and 57-cell?

1 answer  ·  posted 2y ago by WheatWizard‭  ·  last activity 1y ago by ziggurism‭

polytopes
80%
+6 −0
Criteria for solvable Minesweeper game?

0 answers  ·  posted 2y ago by Olin Lathrop‭  ·  edited 2y ago by Olin Lathrop‭

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

3 answers  ·  posted 4y ago by msh210‭  ·  last activity 4y ago by Derek Elkins‭

high-school-mathematics
80%
+6 −0
Discrete data: Graphs and skewness

2 answers  ·  posted 4y ago by Nezar ‭  ·  last activity 4y ago by 1muflon1‭

skewness statistics discrete-data
80%
+6 −0
80%
+6 −0
How to show if a set is simply connected?

1 answer  ·  posted 4y ago by kreijstal‭  ·  last activity 4y ago by Derek Elkins‭

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

2 answers  ·  posted 4y ago by msh210‭  ·  last activity 4y ago by DonielF‭

euclidean-geometry high-school-mathematics
77%
+5 −0
Which of the multiple definitions of correlation to use?

0 answers  ·  posted 4y ago by Mithrandir24601‭  ·  last activity 4y ago by r~~‭

statistics correlation
77%
+5 −0
77%
+5 −0
77%
+5 −0
77%
+5 −0
Notation for one-sided hypothesis testing

1 answer  ·  posted 3y ago by tommi‭  ·  last activity 1y ago by Glen_b‭

statistics notation hypothesis-testing
75%
+4 −0
75%
+4 −0
Optimising a 3 value problem (well 2 really)

1 answer  ·  posted 3y ago by KalleMP‭  ·  last activity 3y ago by Peter Taylor‭

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

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

logic equation algebra problem
75%
+4 −0
Generalization of categorical product

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

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

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

set-theory ordinal-numbers
75%
+4 −0
Intuitively, why's X% of Y = Y% of X?

1 answer  ·  posted 4y ago by Chgg Clou‭  ·  last activity 4y ago by celtschk‭

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

1 answer  ·  posted 4y ago by anoldmaninthesea‭  ·  last activity 4y ago by gramps‭

probability