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Convex real projective structures on Coxeter orbifold $D^2(;n_1,n_2,n_3,n_4)\times \mathbb{R}$
Jaesung Bae
https://arxiv.org/abs/2509.05579 https://arxiv.o…

Convex real projective structures on Coxeter orbifold $D^2(;n_1,n_2,n_3,n_4)\times \mathbb{R}$
The deformation space of real projective structures parametrizes the space of the convex real projective structures on an orbifold. The Coxeter orbifold can be obtained $D^2(;n_1,n_2,n_3,n_4)\times\mathbb{R}$ by embedding the Coxeter quadrilateral from $\mathbb{RP}^2$ to $\mathbb{RP}^3$, and extending the side edges to planes and perturbing these to obtain a convex polytope. This noncompact orbifold can be induced from two combinatorial polytopes. Using this fact, we determine the deformation s…

Am in Nova Scotia. Speaking as West Coaster, everything is very early here.

Hertz and other car rental agencies are increasingly relying on scanners that use high-res imaging and AI to flag even tiny blemishes, angering some customers (Gabe Castro-Root/New York Times)
https://www.nytimes.com/2025/07/09/travel/rental-car-ai-scann…

Hertz and Other Rental Car Agencies Turn to AI for Damage Detection
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💪 The Anxiety Plaguing Male Fiction Writers
http://www.vulture.com/article/jordan-castro-muscle-man-review.html
🆓 https://

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¿Qué es IKEA? ¿Es como un Pequeño Mundo pero extranjero? 😆
#PequeñoMundo #CostaRica

Combover Castro
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This is for tee hee, not treason: let's not have humor lead to homicide.
#satire #potus45

Viene, viene ... el periodo electoral en Costa Rica
https://www.tse.go.cr/2026/

Combover Castro
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No laws were broken in the making of this bot: don't send me to a camp, please.
#satire #potus45