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@shaun@mastodon.xyz
2025-08-28 04:52:36

I’m not _in_ Mississippi, god damnit and thank god. I have an IP with a tn.comcast.net PTR, which comes from a /17 with an ARIN netname of “MEMPHIS9.” Your geolocation provider sucks ass, because _all_ geolocation providers suck ass, which is ultimately your problem and not mine because now I’m posting somewhere else. And fuck red states for getting us all into this censorious shitshow.
#Bluesky

* Announcement Unfortunately, Bluesky is unavailable in Mississippi right now. A new Mississippi law requires us to implement age verification for all users before they can access Bluesky. We think this law creates challenges that go beyond its child safety goals, and creates significant barriers that limit free speech and disproportionately harm smaller platforms and emerging technologies. As a small team, we cannot justify building the expensive infrastructure this requirement demands while l…
@arXiv_mathCV_bot@mastoxiv.page
2025-07-25 08:39:52

A new approach to the Monge-Amp\`ere eigenvalue problem
Chinh H. Lu, Ahmed Zeriahi
arxiv.org/abs/2507.18409 arxiv.org/pdf/2507.18409…

A new approach to the Monge-Ampère eigenvalue problem
We study the eigenvalue problem for the complex Monge-Ampère operator in bounded hyperconvex domains in $\C^n$, where the right-hand side is a non-pluripolar positive Borel measure. We establish the uniqueness of eigenfunctions in the finite energy class introduced by Cegrell, up to positive multiplicative constants, and provide a Rayleigh quotient type formula for computing the eigenvalue. Under a natural continuity assumption on the measure, we further show that both the eigenvalue and eig…

@chris@mstdn.chrisalemany.ca
2025-07-10 19:00:28

Isn't it weird how when a Federal Crown Corporation - Marine Atlantic - buys a new ship... there is nary a mention that it was built in China (#BCPoli #BCFerries

@leftsidestory@mstdn.social
2025-07-07 00:30:06

Urban Solitude II 🈳
城市孤独 II 🈳
📷 Pentax MX
🎞️Fujifilm Neopan SS, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Fujifilm Neopan 100 SS (FF) **English:** A close-up black and white photograph focusing on the intricate details of a traditional building's roof. The roof features elaborate carvings and decorative elements, showcasing the craftsmanship involved. The image captures the contrast between the dark roof and the lighter sky in the background, with tree branches adding a natural element to the composition. **Chinese:** 一张黑白照片的特写，聚焦于一栋传统建筑屋顶的精细细节。屋顶上有精雕细琢的装饰元素，展示了精湛的工艺。照片捕捉到了黑暗屋顶与背景中较亮天空的对比，树枝为构图增添…
Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph of a street scene in what appears to be an urban area. The image is taken from under the eaves of a traditional building with ornate architectural details. People are seen riding bicycles and walking on the street, which is lined with trees. The scene captures a blend of traditional and modern elements, with the old building contrasting against the everyday life of the city. **Chinese:** 一张黑白照片，拍摄的是城市街道场景。照片是在一栋具有精美建筑细节的传统建…
Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph capturing a serene outdoor scene. The image features tall trees with lush foliage, partially obscuring the view of buildings in the background. Overhead, several electrical wires stretch across the frame, adding a touch of urbanity to the otherwise natural setting. A street sign with Chinese characters is visible on the right side of the image, indicating the location might be in a Chinese-speaking region. **Chinese:** 一张黑白…
Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph showing the side of a traditional building with a tiled roof. An air conditioning unit is mounted on the wall, blending modern convenience with traditional architecture. The image captures the juxtaposition of old and new, with the air conditioning unit standing out against the traditional tiles and brickwork. **Chinese:** 一张黑白照片，展示了一栋传统建筑的侧面，屋顶铺有瓦片。一台空调安装在墙上，将现代便利与传统建筑融为一体。照片捕捉到了新旧对比，空调在传统瓦片和砖墙的映衬下格外显眼。

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@arXiv_mathAP_bot@mastoxiv.page
2025-07-18 08:45:22

Symmetrization on the sphere and applications
Satyanad Kichenassamy (DMA, CIMS)
arxiv.org/abs/2507.13027 arxiv.org/pd…

Symmetrization on the sphere and applications
We introduce a new method of symmetrization of mappings on the $n$-sphere ($n\geq 2$). They are applied to estimate solutions of quasilinear elliptic partial differential equations of $p$-Laplacian type, with combinations of Dirac measures on the right-hand side. The case $p=n$ is reduced to a problem on the sphere, using a conformal transformation. The cases when $1 < p < n $ and $p > $n are considered more briefly, full details being available in other papers of the author.

@leftsidestory@mstdn.social
2025-07-05 00:30:01

Urban Snaps II 📸
城市抓拍 II 📸
📷 Pentax MX
🎞️Fujifilm Neopan SS, expired 1995
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph capturing an urban scene. The foreground features the branches and leaves of a tree, creating a natural frame. In the background, modern buildings and a tall structure, possibly a chimney or tower, are visible. The contrast between the organic shapes of the tree and the geometric lines of the buildings adds depth to the image. **Chinese:** 一张黑白照片，捕捉到城市景观。前景是树枝和树叶，形成了一个自然的框架。背景中可见现代建筑和一个高大的结构，可能是烟囱或塔。树木的有机形状与建筑物的几何线条形成鲜明对比，为…
Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph depicting a cluster of bamboo stalks. The image is taken from a low angle, looking upwards, which emphasizes the height and vertical lines of the bamboo. The background is blurred, drawing focus to the bamboo in the foreground and creating a serene, almost abstract visual effect. **Chinese:** 一张黑白照片，描绘了一簇竹子。照片从低角度拍摄，向上看，强调了竹子的高度和垂直线条。背景模糊，将焦点集中在前景的竹子上，营造出一种宁静、几乎抽象的视觉效果。
Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph showcasing traditional architecture. The image focuses on the ornate roof of a building, featuring intricate carvings and details typical of classical Asian architecture. The roof tiles and decorative elements are clearly visible, and the background includes a modern building, creating a juxtaposition between old and new architectural styles. **Chinese:** 一张黑白照片，展示了传统建筑。图像聚焦于建筑物精美的屋顶，展现了典型的亚洲古典建筑的精雕细刻和细节。屋顶瓦片和装饰元素清晰可见，背景中有一…
Fujifilm Neopan 100 SS (FF) **English:** A black and white photograph capturing a close-up view of a tree with dense foliage. The tree branches and leaves dominate the right side of the image, creating a sense of depth and texture. In the background, a tall building and a traffic light can be seen, adding an urban element to the natural scene. **Chinese:** 一张黑白照片，捕捉到一棵枝叶茂密的树的特写视图。树枝和树叶占据了图像的右侧，营造出深度和质感。背景中可见一栋高楼和一个交通灯，为自然景观增添了城市元素。

Yiding Cao Geld mit PayPal.Me senden
Folgen Sie dem Link PayPal.Me/dingsterdingster und geben Sie den Betrag ein. Es ist bequem und sicher. Sie haben noch kein PayPal-Konto? Kein Problem.

@arXiv_csLG_bot@mastoxiv.page
2025-06-03 21:54:47

This arxiv.org/abs/2505.19946 has been replaced.
initial toot: mastoxiv.page/@arXiv_csLG_…

Inverse Q-Learning Done Right: Offline Imitation Learning in $Q^π$-Realizable MDPs
We study the problem of offline imitation learning in Markov decision processes (MDPs), where the goal is to learn a well-performing policy given a dataset of state-action pairs generated by an expert policy. Complementing a recent line of work on this topic that assumes the expert belongs to a tractable class of known policies, we approach this problem from a new angle and leverage a different type of structural assumption about the environment. Specifically, for the class of linear $Q^π$-rea…

@arXiv_csDS_bot@mastoxiv.page
2025-07-01 07:34:03

On Fine-Grained Distinct Element Estimation
Ilias Diakonikolas, Daniel M. Kane, Jasper C. H. Lee, Thanasis Pittas, David P. Woodruff, Samson Zhou
arxiv.org/abs/2506.22608 …

On Fine-Grained Distinct Element Estimation
We study the problem of distributed distinct element estimation, where $α$ servers each receive a subset of a universe $[n]$ and aim to compute a $(1+\varepsilon)$-approximation to the number of distinct elements using minimal communication. While prior work establishes a worst-case bound of $Θ\left(α\log n+\fracα{\varepsilon^2}\right)$ bits, these results rely on assumptions that may not hold in practice. We introduce a new parameterization based on the number $C = \fracβ{\varepsilon^2}$ …