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  • Member for 8 years, 4 months
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29 votes
1 answer
6k views

Intuition/meaning behind quadratic forms

7 votes
2 answers
1k views

Integrating a sum of delta functions?

6 votes
1 answer
129 views

Is my professor's explanation of direct sum accurate?

6 votes
1 answer
3k views

When is the intersection between two Sylow subgroups trivial?

5 votes
3 answers
2k views

Is the derivative of an integral always continuous?

5 votes
1 answer
1k views

Iterative methods: What happens when the spectral radius of a matrix is exactly 1?

5 votes
2 answers
467 views

Relationship between rank of binary matrix and the NOT operator

5 votes
2 answers
597 views

Why should I care about Brooks' Theorem?

4 votes
1 answer
156 views

Conditional probability given only an average

4 votes
1 answer
222 views

Looking for some intuition behind why the area enclosed by a simple closed curve $C$ can be obtained by computing $\frac{1}{2i}\int_C {\bar{z}} \ dz$.

3 votes
0 answers
765 views

Barycentric interpolation formula leads to division by zero?

3 votes
1 answer
1k views

Upper bounding polynomial interpolation error

3 votes
2 answers
725 views

Adding two points on an elliptic curve. Where did I go wrong?

3 votes
2 answers
2k views

Solving the congruence $x^2 \equiv 4 \mod 105$. Is there an alternative to using Chinese Remainder Theorem multiple times?

3 votes
2 answers
2k views

Proving the continued fraction expansion of $\sqrt2$ [duplicate]

3 votes
1 answer
1k views

Showing that a group is isomorphic to a subgroup of the direct product of two factor groups

3 votes
1 answer
126 views

In general, is there a "fast" way to check whether a tensor product is isomorphic to something?

3 votes
5 answers
1k views

Green's function for Laplacian in the plane. Why does the constant matter?

3 votes
0 answers
97 views

Green's Theorem with logarithm

2 votes
1 answer
147 views

Identity involving $\log$ and a power series

2 votes
0 answers
34 views

What is meant by "a length typical of the large-scale vorticity distribution"?

2 votes
2 answers
393 views

What's the difference between $E(K)$ and $E/K$ in elliptic curves?

2 votes
1 answer
130 views

Does a disconnected subset of a metric space need to be equal to the union of its disconnection, or just contained within it?

2 votes
1 answer
56 views

Why do we generally write $(\vec{v} \cdot \nabla )\vec{u}$ as opposed to $\vec{v} \cdot (\nabla \vec{u})$?

2 votes
1 answer
91 views

Identity involving representing a vector from $\mathbb{R}^2$ as a complex number.

2 votes
0 answers
52 views

Why is $\mathbb{R}^2 \otimes_{\mathbb{R}^2} \mathbb{R}^2 \cong \mathbb{R}^2$, but $\mathbb{R}^2 \otimes_{\mathbb{R}} \mathbb{R}^2 \cong \mathbb{R}^4$?

2 votes
1 answer
949 views

Trying to construct an elliptic curve pairing (Tate) example. Can someone help me figure out where my mistake is?

2 votes
1 answer
461 views

A corollary of Arzela-Ascoli

2 votes
2 answers
352 views

Using the Banach Fixed Point Theorem instead of Intermediate Value Theorem to find a root

2 votes
2 answers
1k views

Proving that if $|G| > 1$, then every irreducible $FG$-module has dimension $<|G|$