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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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Acceptable, usual to write $\ge 2$ pipes simultaneously?

1 answer  ·  posted 3y ago by DNB‭  ·  last activity 3y ago by Derek Elkins‭

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How do mathematicians measure area for points?

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by zavier‭

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What does upper indices represent?

2 answers  ·  posted 3y ago by deleted user  ·  last activity 3y ago by r~~‭

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What is the parallel for edges?

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by r~~‭

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Can we add without using addition?

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

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Third kind of infinite

1 answer  ·  posted 3y ago by Estela‭  ·  last activity 3y ago by r~~‭

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What it ≡ called?

1 answer  ·  posted 3y ago by Anonymous‭  ·  last activity 3y ago by Quintec‭

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Why aren't the "21 possibilities here" NOT equally likely?

1 answer  ·  posted 3y ago by DNB‭  ·  edited 3y ago by Wolgwang‭

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

0 answers  ·  posted 3y ago by DNB‭  ·  edited 3y ago by DNB‭

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Find limits of integration in polar coordinates

2 answers  ·  posted 3y ago by MissMulan‭  ·  last activity 3y ago by r~~‭

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Is $r \times \frac{d}{dt} mv=\frac{d}{dt} (r \times mv)$

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by JRN‭

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What is "continuous" in Math?

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

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Is $x=\int \int \ddot{x}\mathrm dx \mathrm dx$?

1 answer  ·  posted 3y ago by deleted user  ·  last activity 3y ago by celtschk‭