Toralf Westström
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 Sep 11 awarded Notable Question Jul 28 awarded Popular Question Jun 5 awarded Popular Question May 16 awarded Notable Question May 4 awarded Yearling Feb 18 awarded Popular Question Nov 27 awarded Popular Question Nov 4 awarded Notable Question Sep 24 awarded Autobiographer Jul 2 awarded Curious May 11 awarded Popular Question May 9 awarded Popular Question May 4 awarded Yearling Feb 24 awarded Popular Question Jan 7 accepted Is $x^2 + 1$ irreducible over $\mathbb{Z}/_{3}[x]$? Jan 7 revised Is $x^2 + 1$ irreducible over $\mathbb{Z}/_{3}[x]$? corrected some math Jan 7 comment Is $x^2 + 1$ irreducible over $\mathbb{Z}/_{3}[x]$? I can see now, that $\sqrt{x^2 +1}$ has no Root in in $\mathbb{Z}_{/3}[x]$ ..(in fact it might be a complex root) I made a mistake in my equation. There is no root and thats why it is irreducible? right? Jan 7 revised Is $x^2 + 1$ irreducible over $\mathbb{Z}/_{3}[x]$? corrected some math Jan 7 asked Is $x^2 + 1$ irreducible over $\mathbb{Z}/_{3}[x]$? Dec 10 comment Find all solutions for a system of linear equations over a given field oh allright.. and so the solution set consits of seven different solutions/vectors like: $$\left(\begin{array}{c} 5-3\cdot 1 \\ 2-3\cdot 1 \\ 1 \end{array}\right) = \left(\begin{array}{c} 2 \\ 6 \\ 1 \end{array}\right)$$ right?