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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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Sample skewness consistency [closed]

0 answers  ·  posted 3mo ago by Guilherme Costa‭  ·  closed 3mo ago by Peter Taylor‭

71%
+3 −0
Matrices with rotational symmetry

1 answer  ·  posted 13d ago by Peter Taylor‭  ·  last activity 13d ago by Peter Taylor‭

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28%
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What is the parallel for edges?

1 answer  ·  posted 6mo ago by deleted user  ·  last activity 6mo ago by r~~‭

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Are we in a "history-valley" for Topology?

2 answers  ·  posted 5mo ago by whybecause‭  ·  last activity 5mo ago by Derek Elkins‭

42%
+1 −2
How do mathematicians measure shape perimeters?

2 answers  ·  posted 9mo ago by deleted user  ·  edited 9mo ago by deleted user

60%
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How $ijk=\sqrt{1}$?

2 answers  ·  posted 3mo ago by deleted user  ·  last activity 3mo ago by Tim Pederick‭

37%
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71%
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Finding distance to parabola's focus, given some points

1 answer  ·  posted 2mo ago by msh210‭  ·  last activity 2mo ago by Udi Fogiel‭

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Probability of students given there are groups

0 answers  ·  posted 10mo ago by Pranav_M99‭  ·  edited 7mo ago by Peter Taylor‭

40%
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Notation for Euclidean Norm

1 answer  ·  posted 12mo ago by Guilherme Costa‭  ·  last activity 12mo ago by tommi‭

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What it ≡ called?

1 answer  ·  posted 8mo ago by Anonymous‭  ·  last activity 8mo ago by Quintec‭

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57%
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difference between quotient rule and product rule

3 answers  ·  posted 1y ago by deleted user  ·  last activity 1y ago by msh210‭

77%
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Complex numbers in 2D, quaternions in 4D, why nothing in 3D?

2 answers  ·  posted 2mo ago by Fred Wamsley‭  ·  last activity 5d ago by Derek Elkins‭

66%
+4 −1
equilateral triangle inscribed in an ellipse

1 answer  ·  posted 2mo ago by msh210‭  ·  last activity 2mo ago by Udi Fogiel‭

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

1 answer  ·  posted 12mo ago by kreijstal‭  ·  last activity 12mo ago by Derek Elkins‭

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How do I prove Simpson's Paradox, scilicet $P(A|B) > P(A|B^C)$?

0 answers  ·  posted 9mo ago by DNB‭  ·  edited 9mo ago by DNB‭

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