Tootfinder

I see the family as a structure that often mirrors the same authoritarian patterns found in the state and the workplace.
It tends to restrict the free development of individuals, shaping them to obey rather than to think and act for themselves.
True liberation, for me, means questioning all forms of imposed authority, including those found within the home.
#AnarchoSyndicalism

Gotta drive 50km with my own car (and fuel) in my (would have been) free time because one of my colleagues used an insurance form in the truck but never replaced it.
So when I needed one (hit a wall at a customer while backing truck into the tight ass space without mirrors - sun kept blinding me), there was none so I now have to go back there to get the paperwork sorted...
Lovely...

Weird Greco 🇬🇷
怪异希腊 🇬🇷
📷 Nikon FE
🎞️FOMAPAN Action 400
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

Okay, not 100% satisfied over the Z80 flags implementation, but works perfectly well and mirrors what the CPU is doing. Used `mem::swap` to switch between the normal and "prime" set of flags and works exactly as expected. Things progress...
#rust #z80

On the mirrors of low-degree del Pezzo surfaces
Giulia Gugiatti, Franco Rota
https://arxiv.org/abs/2506.21758 https://arxiv.org/pdf/2…

On the mirrors of low-degree del Pezzo surfaces
We compare different constructions of mirrors of del Pezzo surfaces, focusing on degree $d \leq 3$. In particular, we extract Lefschetz fibrations, with associated exceptional collections, from the mirrors obtained via the Hori-Vafa and Fanosearch program constructions, which we relate to one another. We show with geometric methods that the Lefschetz fibrations define categorical mirrors. With a more explicit approach, we give a sequence of (numerical) mutations relating the exceptional collect…

Sorry, investors, Tesla is simply not going to expand to be larger than •the entire rest of the auto industry• as your “buy” recommendations implicitly posit.
If they make robotaxis, the public will see them as Nazi robotaxis. If they make robots that aren’t just demo smoke and mirrors, the public will see them as Nazi robots.
Your money is in the Titanic of car brands. Get it out while you can.

Photonic Origami of Silica on a Silicon Chip with Microresonators and Concave Mirrors
Manya Malhotra, Ronen Ben-Daniel, Fan Cheng, Tal Carmon
https://arxiv.org/abs/2507.04484

Photonic Origami of Silica on a Silicon Chip with Microresonators and Concave Mirrors
3D printing of high-quality silica photonic structures is particularly challenging, as surface roughness at the nanoscale can severely degrade optical performance through scattering losses. Here, we develop a technique to fold ultrasmooth silica on silicon chips into such desired 3D structures. A laser-induced, surface-tension-driven method achieves folding with 20 nm alignment accuracy, enabling origami-like polylines and helices with integrated 0.5 nm-smooth photonic devices. The technique al…

Dutch @… opinion editor selects letter from reader claiming that Wilders' far-right PVV has an 'enormous majority' in parliament, and that this mirrors the country.
In real life, PVV got 23.5% of the votes and almost 25% of the seats in parliament.

Single-Beam Magneto-Optical Trap in Back-to-Back Pyramidal and Conical Mirrors
Timothy H. Nguyen, Mariam Mchedlidze, Guanghui Su, Balthazar Loglia, Hanbo Yang, Xuejian Wu
https://arxiv.org/abs/2507.07925

High-charge relativistic electrons by vacuum laser acceleration from plasma mirrors using flying focus pulses
Jiaxin Liu, Zeyue Pang, Hehanlin Wang, Zi-Yu Chen
https://arxiv.org/abs/2505.24614

High-charge relativistic electrons by vacuum laser acceleration from plasma mirrors using flying focus pulses
Relativistic electron beams produced by intense lasers over short distances have important applications in high energy density physics and medical technologies. Vacuum laser acceleration with plasma mirrors injectors has garnered substantial research interest recently. However, a persistent challenge remains unresolved that electrons inevitably detach from the laser acceleration phase due to velocity mismatch. Here, we employ flying focus lasers to address this limitation. Through three-dimensi…

Niclas Tamas – Roads through the Mirror – 2. Nostalgia: The Mirror’s Longing
https://www.clongclongmoo.org/2025/06/16/niclas-tamas-roads-through-the-mirror-2-nostalgia-the-mirrors-longing/

Scalable Dip-Coated Bragg Mirrors for Strong Light-Matter Coupling with 2D Perovskites
Melissa M\'endez-Galv\'an, Zaira Saucedo-Ch\'avez, Diana Medrano, Michael Zuarez-Chamba, Yesenia A. Garc\'ia-Jomaso, C\'esar L. Ord\'o\~nez-Romero, Giuseppe Pirruccio, Arturo Camacho-Guardian, Galo J. A. A. Soler-Illia, Hugo A. Lara-Garc\'ia

Scalable Dip-Coated Bragg Mirrors for Strong Light-Matter Coupling with 2D Perovskites
We report a scalable and cost-effective method for fabricating high-performance Bragg mirrors using a bottom-up approach that combines evaporation-induced self-assembly (EISA) and dip-coating. The photonic crystals are composed of alternating mesoporous SiO$_2$ and dense TiO$_2$ layers, providing a high refractive index contrast ($\sim$0.8). This enables strong reflectance (up to 96%) with as few as five bilayers and precise control of the photonic stop band across the visible spectrum by simpl…

Geometric Duality Between Constraints and Gauge Fields: Mirror Symmetry and Spencer Isomorphisms of Compatible Pairs on Principal Bundles
Dongzhe Zheng
https://arxiv.org/abs/2506.00728

Geometric Duality Between Constraints and Gauge Fields: Mirror Symmetry and Spencer Isomorphisms of Compatible Pairs on Principal Bundles
This paper develops a mirror symmetry theory of Spencer cohomology within the geometric framework of constrained systems on principal bundles, revealing deep symmetric structures in constraint geometry. Based on compatible pairs $(D,λ)$ under strong transversality conditions, we construct a systematic family of mirror transformations: from basic sign mirrors $λ\mapsto -λ$ to general automorphism-induced mirrors $λ\mapsto (dϕ)^*(λ)$. Our core result proves that these transformations preser…

💸 Under shadow of Trump warning, Africa pioneers non-dollar payment systems
https://www.japantimes.co.jp/business/2025/06/24/markets/trump-africa-non-dollar-payments/
🆓

Under shadow of Trump warning, Africa pioneers non-dollar payment systems
The move by Africa to create payments systems that do not rely on the greenback mirrors a push by China to develop financial systems independent of Western institutions.

3D tracking of Plankton with single-camera stereoscopy
J. Moscatelli, X Benoit Gonin, F. Elias
https://arxiv.org/abs/2506.05365 https://

3D tracking of Plankton with single-camera stereoscopy
We introduce a device developed to perform a 3D tracking of passive or active particles under flow, confined in a medium of hundreds micrometers wide. Micro-objects are placed inside a vertical glass capillary and two mirrors are set behind it with a certain angle, making it possible to have the two reflections of the capillary on the same optical plane. A 3D reconstruction of the trajectories, captured with a single camera, is carried out along the vertical axis with a micrometer-scale precisi…

This https://arxiv.org/abs/2411.16666 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_sta…

CatNet: Controlling the False Discovery Rate in LSTM with SHAP Feature Importance and Gaussian Mirrors
We introduce CatNet, an algorithm that effectively controls False Discovery Rate (FDR) and selects significant features in LSTM. CatNet employs the derivative of SHAP values to quantify the feature importance, and constructs a vector-formed mirror statistic for FDR control with the Gaussian Mirror algorithm. To avoid instability due to nonlinear or temporal correlations among features, we also propose a new kernel-based independence measure. CatNet performs robustly on different model settings …

A study of cross-relaxation and temporal dynamics of lasing at 2 microns in Thulium doped ceramic
Alessandro Fregosi, Fernando Brandi, Luca Labate, Federica Baffigi, Gianluca Cellamare, Mohamed Ezzat, Daniele Palla, Guido Toci, Alex Whitehead, Leonida A. Gizzi
https://arxiv.org/abs/2506.08948

A study of cross-relaxation and temporal dynamics of lasing at 2 microns in Thulium doped ceramic
We report the characterization of the pump absorption and emission dynamic properties of a \tulio{} ceramic lasing medium using a three mirrors folded laser cavity. We measured a slope efficiency of 73\%, which allowed us to retrieve the cross-relaxation coefficient. The behavior of our system was modeled via a set of macroscopic rate equations in both the quasi continuous wave and the pulsed pumping regime. Numerical solutions were obtained, showing a good agreement with the experimental findi…

AI's Euclid's Elements Moment: From Language Models to Computable Thought
Xinmin Fang, Lingfeng Tao, Zhengxiong Li
https://arxiv.org/abs/2506.23080

AI's Euclid's Elements Moment: From Language Models to Computable Thought
This paper presents a comprehensive five-stage evolutionary framework for understanding the development of artificial intelligence, arguing that its trajectory mirrors the historical progression of human cognitive technologies. We posit that AI is advancing through distinct epochs, each defined by a revolutionary shift in its capacity for representation and reasoning, analogous to the inventions of cuneiform, the alphabet, grammar and logic, mathematical calculus, and formal logical systems. Th…

How does this car pass a safety inspection? I mean, maybe the no-doors thing is ok, but no wing mirrors?

This https://arxiv.org/abs/2406.02957 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

A note on the involutive invariants of splices
A natural family of potentially 2-torsion elements in the integer homology cobordism group consists of splices of knots with their mirrors. We show that such 3-manifolds have locally trivial involutive Floer homology. We show some related families of splices also have locally trivial involutive Floer homology. Our arguments show that many gauge theoretic invariants also vanish on these 3-manifolds.

50 years ago today, the #GratefulDead at winterland for the bob fried memorial boogie, still officially masquerading as jerry garcia & friends. tonight it's the dead with mickey hart (still a guest) on 2nd drums. ned lagin set to join, but doesn’t. keith godchaux on rhodes. 2 short satisfying sets.
partial soundboard:

🇺🇦 #NowPlaying on #BBC6Music's #TheBBCIntroducingMixtape
Mali Hâf:
🎵 someone change the mirrors
#MaliHâf
https://open.spotify.com/track/52Od13zbDEoNKiJme2y96p

Temporal Orienteering with Changing Fuel Costs
Timoth\'ee Corsini, Jessica Enright, Laura Larios-Jones, Kitty Meeks
https://arxiv.org/abs/2507.00728 ht…

Temporal Orienteering with Changing Fuel Costs
The problem Orienteering asks whether there exists a walk which visits a number of sites without exceeding some fuel budget. In the variant of the problem we consider, the cost of each edge in the walk is dependent on the time we depart one endpoint and the time we arrive at the other endpoint. This mirrors applications such as travel between orbiting objects where fuel costs are dependent on both the departure time and the length of time spent travelling. In defining this problem, we introduce…

Can Machines Philosophize?
Michele Pizzochero, Giorgia Dellaferrera
https://arxiv.org/abs/2507.00675 https://arxiv.org/pdf/2507.00675…

Can Machines Philosophize?
Inspired by the Turing test, we present a novel methodological framework to assess the extent to which a population of machines mirrors the philosophical views of a population of humans. The framework consists of three steps: (i) instructing machines to impersonate each human in the population, reflecting their backgrounds and beliefs, (ii) administering a questionnaire covering various philosophical positions to both humans and machines, and (iii) statistically analyzing the resulting response…

Park Discovery III 🏞️
公园探险 III 🏞️
📷 Nikon FE
🎞️Lucky SHD 400
buy me ☕️ ?/请我喝杯☕️？
#filmphotography

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.

This https://arxiv.org/abs/2501.01643 has been replaced.
initial toot: https://mastoxiv.page/@arX…

A Polarimetry-based Field-deployable Non-interruptive Mirror Soiling Detection Method
The soiling level of heliostat mirrors in Concentrated Solar Power (CSP) fields is one of the key factors that significantly influences optical efficiency. State-of-the-art methods of monitoring heliostats soiling levels still face various challenges, including slow speed, labor-intensive operations, resolution and accuracy constraints or interruptions to solar field operations. We present a rapid, cost-effective, and non-intrusive method for mirror soiling detection based on polarimetric imagi…

The Walk-Length Filtration for Persistent Homology on Weighted Directed Graphs
David E. Mu\~noz, Elizabeth Munch, Firas A. Khasawneh
https://arxiv.org/abs/2506.22263

The Walk-Length Filtration for Persistent Homology on Weighted Directed Graphs
Directed graphs arise in many applications where computing persistent homology helps to encode the shape and structure of the input information. However, there are only a few ways to turn the directed graph information into an undirected simplicial complex filtration required by the standard persistent homology framework. In this paper, we present a new filtration constructed from a directed graph, called the walk-length filtration. This filtration mirrors the behavior of small walks visiting c…

Carroll Geometry Meets De Sitter Space via Holography
Chris D. A. Blair, Niels A. Obers, Ziqi Yan
https://arxiv.org/abs/2506.19720 https://

Carroll Geometry Meets De Sitter Space via Holography
We explain how to relate the ideas of Carroll geometry, matrix theory on instantonic objects, and infinite boost limits of M-theory. Based on these new insights, we explore the implications for possible holographic constructions involving a de Sitter or flat space bulk. We show that Carroll-like geometry in a hypothetical de Sitter holography mirrors the recently realized important role played by Galilei-like geometry in matrix theory and the AdS/CFT correspondence. This also allows us to gener…

End-to-End Large Portfolio Optimization for Variance Minimization with Neural Networks through Covariance Cleaning
Christian Bongiorno, Efstratios Manolakis, Rosario Nunzio Mantegna
https://arxiv.org/abs/2507.01918

End-to-End Large Portfolio Optimization for Variance Minimization with Neural Networks through Covariance Cleaning
We develop a rotation-invariant neural network that provides the global minimum-variance portfolio by jointly learning how to lag-transform historical returns and how to regularise both the eigenvalues and the marginal volatilities of large equity covariance matrices. This explicit mathematical mapping offers clear interpretability of each module's role, so the model cannot be regarded as a pure black-box. The architecture mirrors the analytical form of the global minimum-variance solution yet …

Simulated impact on LSST data of Starlink V1.5 and V2 satellites
Phanindra Kandula, J. Anthony Tyson, Jacob Askari, Forrest Fankhauser
https://arxiv.org/abs/2506.19092

Simulated impact on LSST data of Starlink V1.5 and V2 satellites
The new Starlink V2 satellites incorporate improvements to the chassis brightness through dielectric mirrors, off-pointing solar arrays, and black paint on exposed components. For the general case in which the reflectivities are initially unknown, we simulate LSST operations and repeated photometry of every satellite in simulated model constellations. We derive a brightness model of the Starlink V2 satellite and study the simulated apparent brightness as a function of the satellite position rel…

Spatial, Spectral and Temporal Response of High Intensity Laser Plasma Mirrors
Sk Rakeeb, Animesh Sharma, Sagar Dam, Ameya Parab, Amit Lad, Yash. M. Ved, Amita Das, G. Ravindra Kumar
https://arxiv.org/abs/2506.18425

Spatial, Spectral and Temporal Response of High Intensity Laser Plasma Mirrors
Plasma-based optics have emerged as a powerful platform for manipulating and amplifying ultra-intense laser pulses. However, the inherently nonlinear and dynamic nature of plasma leads to significant spatial, spectral, and temporal modulations when driven at relativistic intensities. These modifications can dramatically alter the structure of the reflected laser pulses, posing challenges for their use in applications such as vacuum ultraviolet (VUV) and X-ray generation, as well as relativistic…

🇺🇦 #NowPlaying on #BBC6Music's #NewMusicFix
Leon Vynehall:
🎵 Mirror's Edge (feat. Poison Anna)
#LeonVynehall
https://leonvynehall.bandcamp.com/track/mirrors-edge-ft-poison-anna
https://open.spotify.com/track/456tPmLLrNb6ZRTeyS2h80

Testing the Quantum Equivalence Principle with Gravitational Waves
Saurya Das, Mitja Fridman, Gaetano Lambiase
https://arxiv.org/abs/2506.14049 https://

Testing the Quantum Equivalence Principle with Gravitational Waves
We study modifications of gravitational wave observables, such as the wave amplitude and frequency, which follow from the quantum equivalence principle, and are expressed in terms of the inertial, gravitational and rest masses of the LIGO/Virgo mirrors. We provide bounds on the violations of the quantum equivalence principle by comparing the results with the most resolved gravitational wave events observed by the LIGO/Virgo collaboration. The formalism is equally applicable to other future grou…

X-ray diffraction from smectic multilayers: crossover from kinematical to dynamical regime
V. V. Samsonov, K. V. Nikolaev, B. I. Ostrovskii, S. N. Yakunin
https://arxiv.org/abs/2505.23547

X-ray diffraction from smectic multilayers: crossover from kinematical to dynamical regime
We study X-ray diffraction in smectic liquid crystal multilayers. Such systems are fabricated as freely suspended films and have a unique layered structure. As such, they can be described as organic Bragg mirrors with sub-nanometer roughness. However, an interesting peculiarity arises in the diffraction on these structures: the characteristic shape of diffraction peaks associated with dynamical scattering effects is not observed. Instead, the diffraction can be well described kinematically, whi…

Electromagnetic and Centrifugal Effects on Plasma Acceleration in the Magnetic Nozzle
A. I. Smolyakov, A. Sabo, S. I. Krasheninnikov, P. N. Yushmanov
https://arxiv.org/abs/2506.19647

Electromagnetic and Centrifugal Effects on Plasma Acceleration in the Magnetic Nozzle
Plasma flow and acceleration in the converging-diverging magnetic field configuration, such as magnetic nozzle in electric propulsion and open magnetic mirrors for fusion applications are considered. This work analyses plasma acceleration in the magnetic nozzle with an emphasis on the electromagnetic effects and centrifugal forces due to plasma rotation. Intrinsic coupling of the azimuthal rotation and azimuthal magnetic field is analyzed, and additional plasma acceleration due to the conversio…

Open-Path Methane Sensing via Backscattered Light in a Nonlinear Interferometer
Jinghan Dong, Weijie Nie, Arthur C. Cardoso, Haichen Zhou, Jingrui Zhang, John G. Rarity, Alex S. Clark
https://arxiv.org/abs/2506.17107

Open-Path Methane Sensing via Backscattered Light in a Nonlinear Interferometer
Nonlinear interferometry has widespread applications in sensing, spectroscopy, and imaging. However, most implementations require highly reflective mirrors and precise optical alignment, drastically reducing their versatility and usability in outdoor applications. This work is based on stimulated parametric down conversion (ST-PDC), demonstrating methane absorption spectroscopy in the mid-infrared (MIR) region by detecting near-infrared (NIR) photons using a silicon-based CMOS camera. The MIR l…