Mathematics
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BalsamicVinegar
  • Member for 5 years, 10 months
  • Last seen more than 1 year ago
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25
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12
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All Questions Answers
Score Newest
question
5
Solve $x^{2} = -1$ in $\mathbb{Q}_{5}$.
Feb 27, 2020
question
3
Show : $(m,n)=1\implies(mx+ny,mn)=(m,y)(n,x)\;\forall x,y\in\mathbb Z$.
Feb 5, 2020
question
3
Show that $\sum_{d \mid n} (-1)^{\frac{n}{d}} \varphi(d) = 0$ for $n$ even.
Feb 11, 2020
question
2
Let $f(n) = \sum_{(k,n)=1} e^\frac{2\pi ik}{n}$. Show that $f(n) = \sum_{k=1}^{n}\left(\sum_{d\mid (k,n)} \mu(d)e^{\frac{2\pi ik}{n}} \right) $
Apr 2, 2020
question
2
Finding the lim inf and lim sup of a sequence
Mar 7, 2019
question
2
Proving that a sequence converges if $|a_n - a_{n+1}| < Mr^n$ for some $M > 0$ and $r \in (0,1).$
Mar 7, 2019
question
1
Find a function $f(x)$ which is defined at every real number but is continuous at $0$ and is not continuous at every other number [duplicate]
Oct 5, 2016
question
1
Finding a Set Which Spans a Given Set
Apr 7, 2018
question
1
Proving the supremum of a set
Feb 12, 2019
question
1
Prove that $a^{b} \equiv 3 \,( \text{mod}\, 4)$ implies $a,b$ odd.
Feb 12, 2020

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