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 Apr 7 awarded Nice Question Mar 24 accepted What does algebraic number look like locally? Mar 24 comment What does algebraic number look like locally? Can I ask if $\alpha$ could be in an extension of $\mathbb{Q}_p$? Mar 24 revised What does algebraic number look like locally? added 5 characters in body Mar 24 asked What does algebraic number look like locally? Mar 8 asked Principal ideals and units Dec 20 accepted smooth vector field on the boundary of unit ball Dec 17 comment smooth vector field on the boundary of unit ball Can I ask how you tell it is pointing outwards? What does that dot product mean? Dec 17 revised smooth vector field on the boundary of unit ball added 2 characters in body Dec 17 asked smooth vector field on the boundary of unit ball Dec 2 awarded Popular Question Oct 2 awarded Yearling Mar 18 asked Cycliness of finite subgroup of the multiplicative group of a field Mar 17 awarded Notable Question Mar 16 comment Why is $(3,1+\sqrt{-5})^2=(2-\sqrt{-5})$ in $\mathbb{Z}[\sqrt{-5}]$ Thanks for the higher viewpoint! Can I ask how you know $P$ is of index 3 in the ring of integers? The only relevant thing I know is the index of a principal ideal in the ring of integers is equal to the norm of the generator over $\mathbb{Q}$. Mar 16 asked Tangent space of tangent vector Mar 16 accepted Why is $(3,1+\sqrt{-5})^2=(2-\sqrt{-5})$ in $\mathbb{Z}[\sqrt{-5}]$ Mar 15 asked Why is $(3,1+\sqrt{-5})^2=(2-\sqrt{-5})$ in $\mathbb{Z}[\sqrt{-5}]$ Mar 14 comment Concrete example of zero section Could you say something about my question on zero vector in tangent space? Mar 14 asked Concrete example of zero section