Mathematics
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dtgo
  • Member for 8 years, 2 months
  • Last seen more than 8 years ago
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question
5
Characterize units in formal power series $R[[x]]$ [duplicate]
Feb 1, 2016
question
2
Associative set operation? [duplicate]
Jan 31, 2016
question
2
Is the evolute always a regular curve? [closed]
Feb 9, 2016
question
1
How to prove this orthogonality? [duplicate]
Feb 3, 2016
question
1
Is the set of all $f$ such that $\lim_{x\to1^-}f(x) = 0$ an ideal in the ring of functions from $[0,1]\rightarrow \mathbb{R}$?
Feb 7, 2016
question
1
What are the ideals of the ring $\mathbb{Z}[x]/(2,x^3+1)$? [closed]
Feb 12, 2016
question
1
How can I show that $x+1$ and $x^2+x+1$ are irreducible in $\mathbb{R}[x]$?
Feb 13, 2016
question
0
How to prove a weak version of Inverse Function Theorem using Extreme Value Theorem?
Jan 26, 2016
question
0
What are the units in $\mathbb{Z}/n\mathbb{Z}$ in general?
Jan 31, 2016
question
0
For the ring $\mathbb{Z}[\sqrt{d}]$
Feb 14, 2016