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A note on rounding fractional matchings with constant-factor strong negative correlation

arXiv:2606.07820v1 Announce Type: new Abstract: We describe new dependent-rounding algorithms for bipartite graphs. Given a fractional matching $x$ of graph $G = (U \cup V, E)$, the algorithms return an integral solution $X$ such that each right-node $v \in V$ has at most one edge, and where the variables $X_e$ also satisfy broad non-positive correlation properties. In particular, for any edges $e_1, e_2$ sharing a left-node $u \in U$, the variables $X_{e_1}, X_{e_2}$ have \emph{strong}...

arXiv CS 1d ago

One-Shot Klein Cutting Planes for Lipschitz Geodesically Convex Optimization in Hyperbolic Space

arXiv:2605.17540v4 Announce Type: replace Abstract: Motivated by the COLT 2023 open problem of Criscitiello, Mart\'inez-Rubio, and Boumal on deterministic first-order methods for Lipschitz geodesically convex optimization on Hadamard manifolds, we study hyperbolic space \[ \HH^d_{-\kappaC^2} =\{X\in\R^{d+1}:\ipL{X}{X}=-1,\ X_0>0\}, \qquad \ip{U}{V}_X=\kappaC^{-2}\ipL{U}{V}. For every geodesically convex $M$-Lipschitz function \[ f:\bar B_{\HH}(x_0,r)\to\R,\qquad s=\kappaC r, \] we give a...

arXiv CS 9d ago

Worker Utility as Hysteresis: A Preisach Model of Transaction Acceptance in Gig Labour Markets

arXiv:2606.04916v1 Announce Type: new Abstract: Worker utility is not observed -- only its consequence is. Each gig transaction produces a single bit: accepted or rejected.

arXiv CS 6d ago

The Last Evolution, by John W Campbell Jr. (1932)

The Project Gutenberg EBook of The Last Evolution, by John Wood Campbell This eBook is for the use of anyone anywhere at no cost and with almost no restrictions whatsoever. You may copy it, give it away or re-use it under the terms of the Project Gutenberg License included with this eBook or online at www.gutenberg.org

Hacker News 2h ago

Diffusion-Based Heart Sound Generation: Evaluation with Physiological Signal Metrics, Classifiers, and Expert Listening

arXiv:2606.02448v1 Announce Type: cross Abstract: Publicly available phonocardiogram (PCG) datasets remain limited in size and pathological diversity, constraining both auscultation training and the generalisation of automated heart-sound classifiers. A class-conditional diffusion model for PCG generation is developed in the log-mel domain and synthetic fidelity is assessed using complementary (i) physiology-inspired plausibility metrics, (ii) downstream label-consistency evaluation, and...

arXiv CS 8d ago

A prognostic human brain network for diffuse midline glioma

Abstract Diffuse midline gliomas (DMGs) are near-universally lethal tumours of the childhood central nervous system1,2. In animal models, DMGs form brain-wide integrated networks through neuron-to-glioma synapses3,4,5,6 and glioma-to-glioma gap junctional coupling3. This extensive connectivity robustly promotes the growth and invasion of DMG3,4,5,6,7,8,9 and other glial malignancies10,11,12 through paracrine mechanisms and direct neuron-to-glioma synapses.

Nature 18h ago

India news: Myanmar president arrives to boost ties

India news: Myanmar president arrives to boost ties Published May 30, 2026last updated May 30, 2026What you need to know - Myanmar's president is set to meet with Indian Prime Minister Narendra Modi - The Congress Party is meeting to form a new Cabinet in Karnataka state Here is a roundup of some of the top headlines that have India talking on Saturday, May 30: Tired of missing our real-time updates?Click here to add us as a Preferred Source on Google.

Deutsche Welle 11d ago

Shantell Sans

The Story of Shantell Sans Shantell Sans mixes variable axes for Weight, Italic, Informality, and Bounce to deliver a wide array of font styles, from friendly, readable, everyday typographic workhorses to striking, high-energy, experimental styles meant especially for animation. This is the story behind its inspiration and creation. Shantell Martin, Artist One of my first relationships with words was back in elementary school.

Hacker News 10d ago

A first-in-class pulsatile FXR agonist for bile-acid-related liver diseases

Abstract Nuclear receptors are central regulators of metabolism1, yet therapeutic strategies that enforce continuous receptor activation frequently lead to reduced efficacy and unacceptable toxicity. Here we report a first-principles drug design strategy that aligns pharmacokinetics with physiological signalling cycles. We developed linafexor, a potent non-bile-acid agonist of the farnesoid X receptor (FXR)2; it is engineered for rapid systemic clearance, which enables pulsatile receptor...

Nature 18h ago