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  • 107 votes cast
Apr
23
asked Example of a field extension $K/F$ such that $K$ is the splitting field of some (non-separable) polynomial in $F$, but not Galois over $F$?
Apr
22
asked $K/\mathbb{Q}$ contains a complex number - is complex conjugation in $\text{Aut}(K/\mathbb{Q})$?
Apr
16
asked Subgroups of $\mathbb{Z}_p^n$
Apr
1
asked Separable polynomials are the product of the minimal polynomials of their roots?
Mar
25
asked Does this inequality involving the sum of components of a vector and its norm have a name?
Mar
7
asked Components of a bounded vector must be bounded
Feb
25
asked Elegant proof that maximum of sums is, at most, sum of maximums
Feb
17
asked More elegant way to make the argument that $\mathbb{Q}[x,y]/\langle x,y \rangle \cong \mathbb{Q}$
Feb
1
answered Could I do this to an infinite series?
Apr
30
answered When to use the $\equiv$ symbol (such as in $5^{6}$ $\equiv$ 1 mod 7) vs =
Dec
15
answered To which group is $G/\ker \phi$ isomorphic to?
Nov
30
asked Meaning of the word “conjugate” across mathematics?
Nov
24
asked Solutions of $a^{2} - 2b^{2} \equiv 0$ mod $p$
Jun
7
answered What is the relationship between the area of a triangle and an area of a segment of a circle?
May
22
asked How to distinguish between knots and links based on knot diagrams/projections
Apr
10
asked Why is proof of the [topological] closed graph theorem incorrect?
Oct
14
asked How can I better understand manipulating “operators” in mathematical relations?
Jul
8
asked What “is” a matrix in the context of a vector space?
Aug
22
asked What are the technical reasons that we must define vectors as “arrows” and carefully distinguish them from a point?
Mar
28
asked Notation for factorial-type pattern with a skip/step of two instead of one?