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Mathematics
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legionwhale
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Fourth-year maths undergraduate.

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27
Why do we define the modulus of a complex number as we do?
Apr 11, 2021
21
Can every terminating rational number be approximated with a square root?
Sep 18, 2023
9
Dominated convergence of series of powers
Nov 9, 2023
8
Are groups always isomorphic to their image under power maps?
Jul 1, 2022
7
Does every commutative ring have $2^n$ idempotents?
Apr 1, 2023
6
Values of the Liouville function
Dec 18, 2021
6
Functional equation $f\left( x^{2}\right) =2f\left( x\right)$and the Cauchy problem $f\left( xy\right) =f\left( x\right) +f\left( y\right)$
Sep 15, 2023
4
When tackling trig identities, which side is the best to start from?
Feb 17, 2020
4
Quotient of $\mathbb{R^*}$ by cyclic group product
Jun 28, 2021
4
Numbers with 1000 digits which are the sum of the 1000th powers of their digits
Jul 29, 2021