Mathematics
Tanny Sieben's user avatar
Tanny Sieben's user avatar
Tanny Sieben's user avatar
Tanny Sieben
  • Member for 7 years, 7 months
  • Last seen this week
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71
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All Questions Answers
Score Newest
question
17
Existence of infinite set of positive integers s.t sum of reciprocals is rational and set of primes dividing an element is infinite
Jun 30, 2019
question
14
Does there exist a generating function for the rational numbers?
Mar 7, 2019
question
13
Sum of three consecutive cubes equals a perfect square
May 5, 2016
question
9
In a set of $n$ integers where no proper nonempty subset sums to a multiple of $n$, all elements are congruent
Mar 29, 2017
question
9
How different can $f(g(x))$ and $g(f(x))$ be?
Feb 10, 2020
question
9
Limit of alternating sum of fractional parts
Jan 15, 2020
question
7
Let $T: \mathbb{R}^3 \rightarrow \mathbb{R}^3$ be a linear map such that $T^3 = T$. Show that $T$ is diagonalizable (elementarily)
Jun 2, 2021
question
7
If there exists a positive integer $n$ such that any element $x$ of a ring $R$ satisfies $x^{4^n+2} = x$, then every element $x$ in $R$ is idempotent
Nov 28, 2019
answer
6
How solve with a short way a problem on the sequences for students of a high school?
Oct 5, 2021
question
6
Identities similar to $\frac{a^3 + b^3 + c^3}{3} \cdot \frac{a^7 + b^7 + c^7}{7} = \left( \frac{a^5 + b^5 + c^5}{5} \right)^2$
Apr 13, 2021
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5
Computing the homotopy type of $B\operatorname{Aut}(K(G,1))$ using a fibration sequence: why is $G \to \text{Aut(G)}$ given by conjugation?
5
References on principal $\mathbf{C}$-bundles, where $\mathbf{C}$ is a category?

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