Let $G$ be a finite group, $k$ a field, and $kG$ the corresponding group algebra. My question is: When ${}_{kG}S$ is a simple submodule of the left regular module ${}_{kG}kG$ with $\dim_k(S) = 1$ and $$_{kG}S \simeq\ _{kG}k$$ where the module structure of $k$ over $kG$ given by $g\cdot x:= x$ fo...
I have an event that I'd like to model as the product of a random variable $X \sim \text{Poisson}(\lambda)$ and $Y\sim\text{Gamma}(\alpha,\beta)$. I'd like to see the quantiles of my theoretical model, for which I'll need the inverse CDF. Let's focus on just the CDF because once I have that I wi...
I have a Weiner process $\{W(t)\}_{t\ge0}$ with $\sigma^2=\text{Var}(W(1))=1$. For a real constant $\epsilon>0$ consider the differential ratio process $\Delta_\epsilon=\{\Delta_\epsilon(t)\}_{r>0}$ given by \begin{equation} \Delta_\epsilon(t) = \frac{W(t+\epsilon)-W(t)}{\epsilon}, \quad \text{fo...
Whenever I'm browsing questions about calculus(indefinite integration, definite integration and ODEs), more often than not I've seen only 1-2 tags being used, especially in old questions(6-10 years old). For example, Usually, calculus questions don't include the calculus tag(ironically). In inde...
matlab
tag then it makes sense to have an R tag. — GPerez 3 hours ago« first day (4537 days earlier) ← previous day next day → last day (30 days later) »