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@arXiv_mathSG_bot@mastoxiv.page
2025-06-05 07:27:55

Concave symplectic toric fillings
Aleksandra Marinkovi\'c
arxiv.org/abs/2506.03912 arxiv.org/pdf/2506.03912

Concave symplectic toric fillings
As shown by Etnyre and Honda in [EH], every contact 3-manifold admits infinitely many concave symplectic fillings that are mutually not symplectomorphic and not related by blow ups. In this note we refine this result in the toric setting by showing that every contact toric 3-manifold admits infinitely many concave symplectic toric fillings that are mutually not equivariantly symplectomorphic and not related by blow ups. The concave symplectic toric structure is constructed on certain linear and…

@inthehands@hachyderm.io
2025-06-06 14:46:29

So some Democratic politicians actually got the memo, but clearly others are flailing. To help them out, I’d like to offer my sage political wisdom. Try the following message:
1. Kick Trump out.
2. Tax the living shit out of billionaires.
3. Use the money to get folks back on their feet and clean up this mess.
Just that. Simple and direct, no fussing around. Give that a try and see how it lands. Float a trial balloon in some minor swing district election and see what happens.

@midtsveen@social.linux.pizza
2025-07-05 22:57:31

There are days when autism feels overwhelming, and I find myself oversharing every thought and feeling that comes to mind.
But then, just as suddenly, my mood can shift. I’ll feel a surge of energy and want to shake things up.
That’s when I dive into my collection of anarchism memes and start posting my latest finds for everyone to enjoy!
We are here, unapologetically autistic and proud, and we refuse to be silenced!

A white infinity symbol on a black background is overlaid on diagonal stripes in red, orange, yellow, green, and teal. The image conveys inclusivity and diversity.
@hanno@mastodon.social
2025-07-03 09:25:56

Do we do #ICanHazPDF on Mastodon? saemobilus.sae.org/papers/demo

2000-01-2005: Demonstration of a DME (Dimethyl Ether) Fuelled City Bus - Technical Paper

The aim of the project was to demonstrate and evaluate the feasibility of DME (Dimethyl Ether) fuelled buses, through laboratory and field tests.
The performance and emission targets of the HD DME engine has been successfully demonstrated and the bus has been converted to accommodate the DME engine and the fuel tank system. Two DME filling stations have been build. Additives for DME lubrication and odor have been selected. A …
@Dragofix@veganism.social
2025-07-03 21:10:23

Is cheese secretly fueling your nightmares? Science weighs in #AnimalRights

Is cheese secretly fueling your nightmares? Science weighs in
Over a thousand students revealed a striking link between lactose intolerance and nightmare-filled nights, hinting that midnight stomach turmoil from dairy can invade dreams. Researchers suggest simple diet tweaks—especially ditching late-night cheese—could turn scary sleep into sweet rest, though more experiments are needed to decode the gut-dream connection.

@arXiv_astrophIM_bot@mastoxiv.page
2025-06-06 07:28:32

Optimization of the multiple sampling and signal extraction in non-destructive exposures
B. Kubik, R. Barbier, A. Castera, E. Chabanat, S. Ferriol, G. Smadja
arxiv.org/abs/2506.04904

Optimization of the multiple sampling and signal extraction in non-destructive exposures
We derive the full covariance matrix formulae are derived for proper treatment of correlations in signal fitting procedures, extending the results from previous publications. The straight line fits performed with these matrices demonstrate that a significantly higher signal to noise is obtained when the fluence exceeds 1 e/sec/pix in particular in long (several hundreds of seconds) spectroscopic exposures. The improvement arising from the covariance matrix is particularly strong for the initial…

@arXiv_physicsappph_bot@mastoxiv.page
2025-06-05 07:32:46

Direct laser ablation of 2D material films for fabricating multi-functional flexible and transparent devices
Yigit Sozen, Yu Kyoung Ryu, Javier Martinez, Andres Castellanos-Gomez
arxiv.org/abs/2506.03730

Direct laser ablation of 2D material films for fabricating multi-functional flexible and transparent devices
We present a scalable method for direct patterning of graphite and transition metal dichalcogenide (TMD) films on polycarbonate (PC) and other transparent substrates using fiber laser ablation. This process facilitates the fabrication of various functional devices, including strain gauges, supercapacitors, and photodetector arrays, without the need for photolithography or solvents, thereby simplifying device production and enhancing environmental sustainability. Utilizing roll-to-roll mechanica…

@simon_brooke@mastodon.scot
2025-06-02 04:53:22

Last night I dreamed that the great computer scientist, Niklaus Wirth, had died by suicide because he was convinced his intellect was failing, because a simple financial calculation was failing, because he'd caught an exception and just returned zero instead of handling it, because he'd written sketch code and meant to come back and deal with it later but had not done so.
Which is almost certainly all arrant nonsense, but what a BIZARRE thing to dream about.

@arXiv_condmatmtrlsci_bot@mastoxiv.page
2025-06-04 13:58:45

This arxiv.org/abs/2505.16016 has been replaced.
initial toot: mastoxiv.page/@a…

Electronic mobility, doping, and defects in epitaxial $\mathrm{BaZrS_3}$ chalcogenide perovskite thin films
We present the electronic transport properties of $\mathrm{BaZrS_3}$ (BZS) thin films grown epitaxially by gas-source molecular beam epitaxy (MBE). We observe n-type behavior in all samples, with carrier concentration ranging from $4 \times 10^{18}$ to $4 \times 10^{20} \mathrm{cm^{-3}}$ at room temperature (RT). We observe a champion RT Hall mobility of 11.1 $\mathrm{cm^2V^{-1}s^{-1}}$, which is competitive with established thin-film photovoltaic (PV) absorbers. Temperature-dependent Hall mobi…