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user247327
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20
Why do we call complex numbers “numbers” but we don’t consider 2-vectors numbers?
Mar 7, 2019
18
What does Aluffi mean by 'pointed set' in the book Algebra: Chapter 0?
Sep 8, 2021
14
What is the point of subspaces?
Apr 10, 2016
12
Probability of getting heads given that first flip was a head?
Dec 26, 2017
11
What is the definition of a set?
Sep 26, 2015
11
Why is $(0, \infty)$ an open set and $ [0, \infty)$ a closed set?
Feb 8, 2019
10
Why isn't Fourier Series taught in calculus 2?
Jun 1, 2018
9
What does it mean to write a linear operator in a particular basis?
Mar 28, 2016
9
Is it possible to define a bijection from nonnegative to positive numbers?
Nov 19, 2020
8
Should a ring be closed under multiplication?
Jul 15, 2015

Top network posts

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24
What happens to unproductive professors?
9
"The girl I love hates me" or "The girl who I love hates me"
5
Why do we need instantaneous speed?