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Sep
1
revised Computing the integral $\int \frac{u}{b - au - u^2}\mathrm{d}u$
fixed latex for integral sign, cleaned up
Sep
1
suggested suggested edit on Computing the integral $\int \frac{u}{b - au - u^2}\mathrm{d}u$
Jun
26
comment Can a ring without a unit element have a subring with a unit element?
www-math.mit.edu/~poonen/papers/ring.pdf
May
12
awarded  Yearling
Apr
19
answered Uniqueness in Matrix Multiplication
Apr
8
comment if B is a maximal linearly independent set in V then B is a basis for V
It is a complete proof. Think about it some more.
Apr
8
comment if B is a maximal linearly independent set in V then B is a basis for V
Yes. I don't understand your line of questioning. Are you unfamiliar with proofs by contradiction?
Apr
7
comment if B is a maximal linearly independent set in V then B is a basis for V
That is the contradiction. ($B \cup \{w\}$ is linearly independent by assumption.)
Apr
7
answered if B is a maximal linearly independent set in V then B is a basis for V
Mar
3
revised Solving an equation in charcateristic 2 in sage OR finding 3-torsion points of an elliptic curve over field with char 2
Said "2-torsion" when "3-torsion" was meant
Mar
3
suggested suggested edit on Solving an equation in charcateristic 2 in sage OR finding 3-torsion points of an elliptic curve over field with char 2
Feb
23
answered For what values of $k$ does this system of equations have a unique solution?
Jan
16
answered Orthogonal Subspaces
Jan
16
awarded  Nice Question
Dec
12
answered What is the basis of basis?
Nov
29
comment Abstract Algebra: Field extensions
Right. The norm will be fixed since the composition of two automorphisms $\sigma_i$ and $\sigma_j$ is another automorphism $\sigma_k$.
Nov
28
answered Abstract Algebra: Field extensions
Nov
25
comment Important topics to cover in an intro course to algebraic number theory?
I can't upvote this answer enough.
Oct
9
answered Differences between infinite-dimensional and finite-dimensional vector spaces
Oct
3
comment Properties of Linear Transformations?
Very often, the motivation for studying a map $T:A \to B$ between algebraic objects is a scenario where we understand $B$ very well, and we wish to understand $A$ better. In order to be able to transfer information from $B$ back to $A$, we need our map $T$ to preserve the relevant structures.