Tootfinder

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"Trojice teenagerů vytvořila chladicí jednotku, kterš využívš rozpouštění solí k dosažení nízkých teplot."
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"Cílem bylo vyřešit problém uchovšvšní vakcín a zdravotnického materišlu ve venkovských oblastech bez přístupu k elektrické síti."
WOW! To je dobrý nšpad!👍

GEPAR3D: Geometry Prior-Assisted Learning for 3D Tooth Segmentation
Tomasz Szczepa\'nski, Szymon P{\l}otka, Michal K. Grzeszczyk, Arleta Adamowicz, Piotr Fudalej, Przemys{\l}aw Korzeniowski, Tomasz Trzci\'nski, Arkadiusz Sitek
https://arxiv.org/abs/2508.00155

GEPAR3D: Geometry Prior-Assisted Learning for 3D Tooth Segmentation
Tooth segmentation in Cone-Beam Computed Tomography (CBCT) remains challenging, especially for fine structures like root apices, which is critical for assessing root resorption in orthodontics. We introduce GEPAR3D, a novel approach that unifies instance detection and multi-class segmentation into a single step tailored to improve root segmentation. Our method integrates a Statistical Shape Model of dentition as a geometric prior, capturing anatomical context and morphological consistency witho…

Induction for extended affine type A Soergel bimodules from a maximal parabolic
Marco Mackaay, Vanessa Miemietz, Pedro Vaz
https://arxiv.org/abs/2507.02347

Induction for extended affine type A Soergel bimodules from a maximal parabolic
In this paper we take a first step towards the categorification of the Zelevinsky tensor product of finite dimensional representations of extended affine type A Hecke algebras.

Orbital-selective charge transfer drives two-step negative thermal expansion structural transitions in PbTa2Se4
Peng Li, Xiaohui Yang, Wenhua Song, Zhefeng Lou, Tongrui Li, Zhengtai Liu, Zhu'an Xu, Zhuoyu Chen, Xiao Lin, Yang Liu
https://arxiv.org/abs/2507.21700

Orbital-selective charge transfer drives two-step negative thermal expansion structural transitions in PbTa2Se4
The negative thermal expansion (NTE) effect has been found generally combined with structural phase transitions. However, the charge and orbital freedoms of the NTE has not been well studied. This study employs angle-resolved photoemission spectroscopy and first-principles calculations to elucidate the charge and orbital kinetics of the anomalous two-step negative thermal expansion structural phase transitions in PbTa2Se4. As the temperature decreases, each transition undergoes a similar block-…

Probabilistic cosmological inference on HI tomographic data
Sambatra Andrianomena
https://arxiv.org/abs/2507.21682 https://arxiv.org/pdf/2507.21682

Probabilistic cosmological inference on HI tomographic data
We explore the possibility of retrieving cosmological information from 21-cm tomographic data at intermediate redshift. The first step in our approach consists of training an encoder, composed of several three dimensional convolutional layers, to cast the neutral hydrogen 3D data into a lower dimension latent space. Once pre-trained, the featurizer is able to generate 3D grid representations which, in turn, will be mapped onto cosmology ($Ω_{\rm m}$, $σ_{8}$) via likelihood-free inference. Fo…

Noise-tolerant tomography of multimode linear optical interferometers with single photons
Yu. A. Biriukov, R. D. Morozov, I. V. Dyakonov, M. V. Rakhlin, A. I. Galimov, G. V. Klimko, S. V. Sorokin, I. V. Sedova, M. M. Kulagina, Yu. M. Zadiranov, A. A. Toropov, A. A. Korneev, S. P. Kulik, S. S. Straupe
https://arxiv.org/abs/2506.2…

Noise-tolerant tomography of multimode linear optical interferometers with single photons
Linear optical networks are fundamental to the advancement of quantum technologies, including quantum computing, communication, and sensing. The accurate characterization of these networks, described by unitary matrices, is crucial to their effective utilization and scalability. In this work, we present the method for reconstructing the transfer matrix of a linear optical interferometer based on the analysis of cross-correlation functions of photon counts between pairs of output modes. Our appr…

Thanks to these volunteers who were stationed to stop runners from missing at the turn of the rock pile I had not only an umbrella but a hand to hold the umbrella
#photo #photography #portrait …

On the construction of a counterexample to Strassen's rank additivity conjecture
Viktoriia Borovik, Cosimo Flavi, Pawe{\l} Pielasa, Anatoli Shatsila, Jeyoung Song
https://arxiv.org/abs/2507.17890

On the construction of a counterexample to Strassen's rank additivity conjecture
The rank additivity conjecture, first formulated by Volker Strassen in 1973, states that the rank of the direct sum of two independent tensors is equal to the sum of their individual ranks. In the last decades, this conjecture has been a central topic in tensor rank theory and its implications for computational complexity. In 2019, Yaroslav Shitov disproved this conjecture in its general form by showing the existence of a counter-example using a dimension counting argument. In this paper, we pr…

Vores nevŸ har lavet skilte til anti-Trump-demoen:
#NoTyrants #DemocratsAbroad

Semi-Tensor-Product Based Convolutional Neural Networks
Daizhan Cheng
https://arxiv.org/abs/2506.10407 https://arxiv.org/pdf/2506.104…

Semi-Tensor-Product Based Convolutional Neural Networks
The semi-tensor product (STP) of vectors is a generalization of conventional inner product of vectors, which allows the factor vectors to of different dimensions. This paper proposes a domain-based convolutional product (CP). Combining domain-based CP with STP of vectors, a new CP is proposed. Since there is no zero or any other padding, it can avoid the junk information caused by padding. Using it, the STP-based convolutional neural network (CNN) is developed. Its application to image and thir…