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juan arroyo
  • Member for 7 years, 4 months
  • Last seen more than 1 year ago
11 votes

Differentiating a function of a variable with respect to the variable's derivative

7 votes

If a derivative of a continuous function has a limit, must it agree with that limit?

5 votes

$X/{\sim}$ is Hausdorff if and only if $\sim$ is closed in $X \times X$

5 votes

An invitation to differential geometry?

3 votes

What is the value of $a/b/c$?

3 votes
Accepted

Can the integral of a function be larger than function itself?

3 votes

True of False: Every 3-dimensional subspace of $ \Bbb R^{2 \times 2}$ contains at least one invertible matrix.

3 votes

If $\lim_{n\to\infty} \frac{a_{n+1}}{a_n} = 0$, show that $\lim_{n\to\infty}{a_n} =0$.

2 votes
Accepted

Integral with respect to counting measure is a series

2 votes

Why does the limit of $\frac{e^{-\frac{1}{z^4}}}{z}$ not exist?

2 votes

Relationship between a function's limits at infinity and its derivative's ones

1 vote
Accepted

Numerability on subset of $\mathbb{R}$ with induced topology

1 vote
Accepted

Raising Complex Numbers to Complex Powers

1 vote

Analytic function related

1 vote

Rigorously justifying switching limits in complex analysis

1 vote
Accepted

Sections of holomorphic vector bundles

1 vote

Locally bounded topological vector spaces

1 vote
Accepted

Differential Topology

1 vote

Is the closure of a symmetric operator symmetric?

1 vote
Accepted

Time derivative of a line integral

1 vote
Accepted

Prove that a regular $\phi : E \to E$ can be uniquely decomposed as a composition of self-adjoint map and a rotation(Unitary trick of Weyl)

1 vote
Accepted

Taking the derivative of a quadratic form

1 vote
Accepted

Intuition with Complex Derivatives of a Complex Variable.

1 vote

$\text{int}(\text{cl}\,A) \subset A$

1 vote

$F(x,y)=sin(||f(x)+y||)^2$ - find the $DF (x, y) (u, v)$ through $Df (x) (u).$

1 vote
Accepted

If $f$ is holomorphic except for $z_0$, then $\lim_{n\to\infty} \frac{a_n}{a_{n+1}}=z_0$

1 vote

Problem in drawing a particular kind of curve

1 vote
Accepted

Manifold not orientable

1 vote

Conditional convergence of the power series.

1 vote

Interesting results easily achieved using complex numbers