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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.

75%
+4 −0
66%
+2 −0
71%
+3 −0
organizing a library

1 answer  ·  posted 15d ago by msh210‭  ·  last activity 15d ago by celtschk‭

71%
+3 −0
Is the really only one solution?

0 answers  ·  posted 21d ago by Grove‭  ·  edited 17d ago by Grove‭

60%
+1 −0
71%
+3 −0
The gcd of powers in a gcd domain

0 answers  ·  posted 2mo ago by Snoopy‭  ·  edited 2mo ago by Snoopy‭

44%
+2 −3
Isn't "any, some, or all" redundant? Why not write just "any"?

1 answer  ·  posted 2mo ago by Chgg Clou‭  ·  last activity 2mo ago by Tim Pederick‭

50%
+0 −0
71%
+3 −0
Notation for nested exponents

1 answer  ·  posted 3mo ago by JRN‭  ·  last activity 3mo ago by leovt‭

70%
+5 −1
equilateral triangle inscribed in an ellipse

2 answers  ·  posted 6mo ago by msh210‭  ·  last activity 3mo ago by Anonymous‭

30%
+1 −5
In "if and only if" proofs, why's 1 direction easier to prove than the other?

2 answers  ·  posted over 1 year ago by Chgg Clou‭  ·  last activity 4mo ago by Prime Mover‭

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

1 answer  ·  posted 4mo ago by KalleMP‭  ·  last activity 4mo ago by Peter Taylor‭

81%
+7 −0
Complex numbers in 2D, quaternions in 4D, why nothing in 3D?

2 answers  ·  posted 6mo ago by Fred Wamsley‭  ·  last activity 4mo ago by Derek Elkins‭

60%
+1 −0
How $ijk=\sqrt{1}$?

2 answers  ·  posted 7mo ago by deleted user  ·  last activity 4mo ago by Tim Pederick‭

80%
+6 −0
60%
+1 −0
71%
+3 −0
Matrices with rotational symmetry

1 answer  ·  posted 5mo ago by Peter Taylor‭  ·  last activity 5mo ago by Peter Taylor‭

50%
+0 −0
71%
+3 −0
Finding distance to parabola's focus, given some points

1 answer  ·  posted 6mo ago by msh210‭  ·  last activity 6mo ago by Udi Fogiel‭

50%
+0 −0
Sample skewness consistency [closed]

0 answers  ·  posted 7mo ago by Guilherme Costa‭  ·  closed 7mo ago by Peter Taylor‭

71%
+3 −0
75%
+4 −0
Missing a solution: Are A and B always equal if A-B=0

3 answers  ·  posted 8mo ago by re89j‭  ·  last activity 8mo ago by tommi‭

40%
+0 −1
60%
+1 −0
How's it possible to arrange 0 objects? How can 0! = 1?

3 answers  ·  posted 9mo ago by DNB‭  ·  edited 9mo ago by Quintec‭

50%
+0 −0
How can I re-write or supplant “basis point” UNambiguously?

0 answers  ·  posted over 1 year ago by Chgg Clou‭  ·  edited 9mo ago by Chgg Clou‭

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