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how to tell if a conformal mapping between regions is unique
How can you tell if a conformal mappimg between regions is unique? I have a conformal mapping from {z : |z|<2, |Arg(z)|< pi/6} to {z : Re(z)>0, Im(z...
Apr 13, 2026
Archive: Updates
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Questions tagged [algebraic-topology]
Q&A for people studying math at any level and professionals in related fields
Apr 13, 2026
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Tangent meets curve again
If the tangent at the point $(16,64)$ on the curve $y^2=x^3$ meets the curve again at at $Q(u,v)$ then $uv$ is ? If found the tangent to the curve at $(16...
Apr 13, 2026
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Proof for sum of squares formula ( statistics - related )
I'm new to the domain of statistics and i'm trying to accumulate as much info as i can right now. I've considered that this question should...
Apr 13, 2026
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Find the variable a so the limit exists
Alright so I had a math question one on of my tests yesterday and it followed. Choose a value of a so that this limit has a definition (since if $x \to 2$...
Apr 13, 2026
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Are there any functions that are differentiable but not continuously-differentiable?
Let $U$ be an open set on ${\mathbb R}^{n}$ (but $U$ is not an empty set), $\textbf{p}\in{U}$, and $f:U\to \mathbb R$ is continuously-differentiable on $U...
Apr 13, 2026
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What is the rigorous definition of $dy$ and $dx$?
Some background: I am a third year undergrad. I have completed two courses on Real Analysis (I have studied $\epsilon$-$\delta$ definitions of limit, cont...
Apr 13, 2026
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What is the expectation of ${{\log }_{2}}X$ if $X>0$ and $X\sim Poisson\left( \lambda \right)$?
Assume that $X$ is a random variable following Poisson distribution with parameter $\lambda $. Note that $X$ is non-negative, i.e., $X>0$. I want to ca...
Apr 13, 2026
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Find $\text{Aut}(\mathbb{Z})$.
Find $\text{Aut}(\mathbb{Z})$. I found an answer on Yahoo, which I don't completely understand. Recall that an isomorphism of a cyclic group must car...
Apr 13, 2026
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Isosceles Triangle how to find the base?
Two sides of a triangle each have length of $5$. All of the following could be the length of the third side Except. $(A)\quad 1$ $B \quad 3$ $C \quad 4$ $...
Apr 13, 2026
