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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
Is this formula for the minimal sum correct?

1 answer  ·  posted 4mo ago by celtschk‭  ·  last activity 3mo ago by celtschk‭

60%
+1 −0
Dividing a cuboid in four

1 answer  ·  posted 2mo ago by Yair Rand‭  ·  last activity 1mo ago by Peter Taylor‭

71%
+3 −0
50%
+0 −0
60%
+1 −0
50%
+0 −0
50%
+2 −2
66%
+2 −0
71%
+3 −0
organizing a library

1 answer  ·  posted 5mo ago by msh210‭  ·  last activity 5mo ago by celtschk‭

28%
+0 −3
Expanding the Integration problem.

1 answer  ·  posted 1mo ago by Anonymous‭  ·  last activity 1mo ago by TextKit‭

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

1 answer  ·  posted 1y ago by DNB‭  ·  last activity 1y ago by Derek Elkins‭

71%
+3 −0
Matrices with rotational symmetry

1 answer  ·  posted 9mo ago by Peter Taylor‭  ·  last activity 9mo ago by Peter Taylor‭

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

3 answers  ·  posted 1y ago by General Sebast1an‭  ·  last activity 1y ago by DavidCary‭

83%
+8 −0
Complex numbers in 2D, quaternions in 4D, why nothing in 3D?

2 answers  ·  posted 10mo ago by Fred Wamsley‭  ·  last activity 8mo ago by Derek Elkins‭

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

1 answer  ·  posted 1y ago by deleted user  ·  last activity 1y ago by zavier‭

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

2 answers  ·  posted 10mo ago by msh210‭  ·  last activity 7mo ago by Anonymous‭

71%
+3 −0
Notation for nested exponents

1 answer  ·  posted 8mo ago by JRN‭  ·  last activity 7mo ago by leovt‭

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

1 answer  ·  posted 8mo ago by KalleMP‭  ·  last activity 8mo ago by Peter Taylor‭

71%
+3 −0
How to calculate remaining volume of a wire spool

2 answers  ·  posted 4mo ago by re89j‭  ·  last activity 4mo ago by Olin Lathrop‭

28%
+0 −3
80%
+6 −0