Tootfinder

Something the web interface in #Mastodon doesn't have but should is information about who posted something with a filtered expression in it.
I sometimes click on them just because I'm curious about who posted it, which kind of defeats the purpose of filtering in the first place.

Adding mine to the #eclipse traffic

This https://arxiv.org/abs/2108.03453 has been replaced.
link: https://scholar.google.com/scholar?q=a

Unipotent Ideals and Harish-Chandra Bimodules
Let $G$ be a complex reductive algebraic group. In this paper, we give a geometric definition of a unipotent representation of $G$. Our definition generalizes the notion of a special unipotent representation, due to Barbasch-Vogan and Arthur. The representations we define arise from finite equivariant covers of nilpotent co-adjoint $G$-orbits. To each such cover $\tilde{\mathbb{O}}$, we attach a distinguished filtered algebra $\mathcal{A}_0$ equipped with a graded Poisson isomorphism $\mathrm{g…

This is a very nice feature, #mastodon. Very nice indeed...

On Conormal Lie Algebras of Feigin-Odesskii Poisson Structures
Leonid Gorodetsky, Nikita Markarian
https://arxiv.org/abs/2403.02805 https://

On Conormal Lie Algebras of Feigin-Odesskii Poisson Structures
The main result of the paper is a description of conormal Lie algebras of Feigin-Odesskii Poisson structures. In order to obtain it we introduce a new variant of a definition of a Feigin-Odesskii Poisson structure: we define it using a differential on the second page of a certain spectral sequence. In the general case this spectral sequence computes morphisms and higher Ext's between filtered objects in an abelian category. Moreover, we use our definition to give another proof of the descriptio…