Tootfinder

Down But Not Out: The Case of Long-Period Comet C/2021 O3 (Panstarrs)
David Jewitt. Jing Li, Michael Jaeger, Yoonyoung Kim
https://arxiv.org/abs/2506.09263

Down But Not Out: The Case of Long-Period Comet C/2021 O3 (Panstarrs)
We combine ground- and space-based observations of long-period comet C/2021 O3 (Panstarrs) (perihelion distance 0.287 au) in order to investigate its reported near-perihelion destruction. Pre-perihelion photometric observations show a remarkably small heliocentric dependence of the scattered light, $\propto r_H^{-s}$ with $s = 2.59\pm0.21$, distinct from values reported in other long-period comets, for which $s$ = 4 is the canonical standard. The index is smaller than expected of coma productio…

This https://arxiv.org/abs/2501.07576 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

The BCFW Tiling of the ABJM Amplituhedron
The orthogonal momentum amplituhedron O_k was introduced simultaneously in 2021 by Huang, Kojima, Wen, and Zhang, and by He, Kuo, and Zhang, in the study of scattering amplitudes of ABJM theory. It was conjectured that it admits a decomposition into BCFW cells. We prove this conjecture.

Re-ranking 2021 NFL Draft by position: Where do Trevor Lawrence, Micah Parsons fall? https://www.nytimes.com/athletic/6400472/2025/06/05/nfl-draft-2021-micah-parsons-trevor-lawrence/

DoorDash, Uber, and Grubhub agree to settle a 2021 lawsuit against New York City over its pandemic-era 15% cap to commissions and fees charged to restaurants (Malathi Nayak/Bloomberg)
https://www.bloomberg.com/news/articles/20

THEME FROM LUPIN Ⅲ 2021［Live Music Video］| ルパン三世のテーマ2021 (Special Studio...
https://youtube.com/watch?v=l0nYMRz1IfU&si=EDIYvjUKhQgkJDxr

Le Dalai-Lama et son manque de discernement : En 1998, il était au courant des procédures juridiques contre la OKC. Découvrez plus d'informations ici :
https://okcinfo.chardonsbleus.org/2021/individus/…

from my link log —
Crossness pumping station: seduced by symmetry.
https://www.anthonybaines.co.uk/blog/2021/9/2/crossness-pumping-station-seduced-by-symmetry
saved 2025-05-15

Crossness Pumping Station: seduced by symmetry — Anthony Baines Photography
Last week, I was lucky enough to visit the Crossness Pumping Station in South-East London . It is variously known as the "Cathedral in the Marshes" or, more bluntly, the "Cathedral of Sewage". It is a former Victorian sewage pumping station, opened in 1865; it continued to ope

Wren Loud and Bold Ambient (2021-06) - Ambient soundscape from 16WW back garden birdlife; small bird makes big noise! #wren #soundscape #fieldRecording -

"No Manuscript"
- piano improvisations -
- from blizzard to calm -
#PianoImprov #NowPlaying
https://

No Manuscript #PianoImprov #NowPlaying
Stan Stewart - @muz4now

Senior State Department staffer Darren Beattie,
a passionate Putin supporter behind the move to dismantle a key agency fighting Russian propaganda,
is married to a Russian woman whose uncle is a longtime Kremlin ally, according to The Telegraph.
Yulia Kirillova grew up in Moscow, studied abroad in North America, and married Beattie in 2021 in Florida.
She moved to D.C. in January.
Her uncle Sergei Cherniko is a drinks magnate who had an estimated net worth of $1…

Trump Official Behind Controversial Russia Decision Has Kremlin Ties
Darren Beattie dismantled a key agency fighting Russian propaganda. There’s a reason why.

from my link log —
Faster remainder by multiplication, with applications to compilers and software libraries.
https://arxiv.org/abs/1902.01961
saved 2021-05-23

Faster Remainder by Direct Computation: Applications to Compilers and Software Libraries
On common processors, integer multiplication is many times faster than integer division. Dividing a numerator n by a divisor d is mathematically equivalent to multiplication by the inverse of the divisor (n / d = n x 1/d). If the divisor is known in advance---or if repeated integer divisions will be performed with the same divisor---it can be beneficial to substitute a less costly multiplication for an expensive division. Currently, the remainder of the division by a constant is computed from…

Good Morning #Canada
#HappyBirthday to Robert Norman Munsch, born June 11, 1945, in Pittsburgh, Pennsylvania, but thankfully, he became a Canadian citizen in 1983. He has published more than 60 books in 30 languages and is a Member of the Order of Canada and Canada’s Walk of Fame. Health issues have ended his writing and public appearances, and in 2021, he was diagnosed with dementia. But his stories continue to speak to children.
#CanadaIsAwesome #CanadianHeroes
https://www.cbc.ca/radio/thenextchapter/full-episode-oct-2-2021-1.6193424/the-stories-will-be-the-last-thing-to-go-robert-munsch-on-his-legacy-as-one-of-canada-s-great-storytellers-1.6193428

Anzahl der #Balkonkraftwerke in #Deutschland mit Stand vom 25.06.2025.
Der aktuelle Höchststand liegt bei 1000675 registrierten Anlagen.
Unplausible Inbetriebnahmedaten von 1900 bis 2015 wurden durch das Registrierungsdatum der

Dalai-Lama et son incapacité totale Š discerner Š qui donner son soutien
https://okcinfo.chardonsbleus.org/2021/individus/dalai-lama-et-son-incapacite-totale-a-discerner-a-qui-donner-son-soutien/…

This https://arxiv.org/abs/2411.13818 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Proof of Merca's stronger conjecture on truncated Jacobi triple product series
In the study of theta series and partition functions, Andrews and Merca, Guo and Zeng independently conjectured that a truncated Jacobi triple product series has nonnegative coefficients. This conjecture was proved analytically by Mao and combinatorially by Yee. In 2021, Merca proposed a stronger version of the conjecture, that is, for positive integers $1\leq S

This https://arxiv.org/abs/2504.13658 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_…

SRGAJ230631.0+155633: an extremely X-ray luminous, heavily obscured, radio-loud quasar at z=0.44 discovered by SRG/ART-XC
We report on a detailed study of a luminous, heavily obscured ($N_{\rm H} \sim 2 \times 10^{23}$ cm$^{-2}$), radio-loud quasar SRGAJ230631.0+155633, discovered in the 4--12 keV energy band by the Mikhail Pavlinsky ART-XC telescope aboard the SRG observatory during the first two years of its all-sky X-ray survey in 2020--2021. The object is located at $z=0.4389$ and is a type 2 AGN according to optical spectroscopy (SDSS, confirmed by DESI). We combine radio-to-X-ray data, including near-simulta…

This https://arxiv.org/abs/2412.13191 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_mat…

Moment-sos and spectral hierarchies for polynomial optimization on the sphere and quantum de Finetti theorems
We revisit the convergence analysis of two approximation hierarchies for polynomial optimization on the unit sphere. The first one is based on the moment-sos approach and gives semidefinite bounds for which Fang and Fawzi (2021) showed an analysis in $O(1/r^2)$ for the r-th level bound, using the polynomial kernel method. The second hierarchy was recently proposed by Lovitz and Johnston (2023) and gives spectral bounds for which they show a convergence rate in $O(1/r)$, using a quantum de Finet…

2021: There is no #AI, I'm doing my own laundry.
2023: CEOs are saying that AI is coming and will do your laundry.
2025: There is AI. I'm still doing my own laundry.
2027?: I'm doing the AI's laundry.

PitchBook: VC exits through public listings, acquisitions, and buyouts reached $67.7B in Q2 2025, up from $38.5B a year ago and the strongest showing since 2021 (Richard Waters/Financial Times)

cofe: Collaboration in Financial Economics (2021)
Network of authors and commenters of papers in finantial economics, obtained from the acknowledgement sections of over 5,000 published research papers.
This network has 13967 nodes and 102039 edges.
Tags: Social, Directed, Weighted, Online, Collaboration
https://networks.ske…

Note on the interpretation of magnetic diffraction in NdAlSi: helical or fan?
Takashi Kurumaji
https://arxiv.org/abs/2506.04000 https://

Note on the interpretation of magnetic diffraction in NdAlSi: helical or fan?
We revisit the magnetic structure analysis reported in Nat. Mater. 20, 1650 (2021), which concluded that a Weyl semimetal candidate NdAlSi hosts a helical magnetic order. This conclusion was based on magnetic neutron diffraction peaks corresponding to modulation vectors $\vec{k}_{in} = (1/3, 1/3, 0)$ and $\vec{k}_{out} = (2/3, 2/3, 0)$, attributed to in-plane and out-of-plane components of the magnetic moments, respectively. Upon careful reanalysis, we suggest that a fan-type magnetic structure…

Vintage NPOI: New and Updated Angular Diameters for 145 Stars
Ellyn K. Baines, James H. Clark III, Bradley I. Kingsley, Henrique R. Schmitt, Jordan M. Stone
https://arxiv.org/abs/2506.02912

Vintage NPOI: New and Updated Angular Diameters for 145 Stars
We present new or updated angular diameters, physical radii, and effective temperatures for 145 stars from the Navy Precision Optical Interferometer data archive. We used data from 1996 to late-2021, and we describe the differences between early and late data, which hinge upon an update of the beam combiner in 2002. We came across several sub-categories of stars of interest: 13 of our stars are promising targets for the Habitable World Observatory and therefore require as much study as possible…

from my link log —
Ironies of automation. (1983)
http://www.complexcognition.co.uk/2021/06/ironies-of-automation.html
saved 2025-05-26

Ironies of Automation
This paper discusses ways in which automation of industrial processes may expand rather than eliminate problems with the human operator.   ...

Temporally Extending Existing Web Archive Collections for Longitudinal Analysis
Lesley Frew, Michael L. Nelson, Michele C. Weigle
https://arxiv.org/abs/2505.24091

Temporally Extending Existing Web Archive Collections for Longitudinal Analysis
The Environmental Governance and Data Initiative (EDGI) regularly crawled US federal environmental websites between 2016 and 2020 to capture changes between two presidential administrations. However, because it does not include the previous administration ending in 2008, the collection is unsuitable for answering our research question, Were the website terms deleted by the Trump administration (2017--2021) added by the Obama administration (2009--2017)? Thus, like many researchers using the Way…

Jährlicher Zubau und Rückbau von #Balkonsolarleistung in Deutschland mit Stand vom 25.06.2025.
Unplausible Inbetriebnahmedaten von 1900 bis 2015 wurden durch das Registrierungsdatum der #Steckersolaranlage ersetzt.

"May It Be Time"
- instrumental explorations -
#NowPlaying #MusicVideos
https://muz4n…

May It Be Time #NowPlaying
Stan Stewart - @muz4now

London-based Dojo, a payments tech provider to over 140K businesses, raised $190M from Vitruvian Partners in its first equity raise since launching in 2021 (Vishal Singh/Silicon Canals)
https://siliconcanals.com/dojo-secures-investment-of-e168-6m/

UK’s payments tech provider Dojo secures investment of €168.6M
Dojo is a payments technology provider that aims to expand its presence in the payments sector with a focus on supporting in-person commerce.

The Soul (緝魂) (2021) is a bleak near-future sci-fi-ish mystery.
In the year 2031, the CEO of a Taiwanese biomedical corporation is found bludgeoned to death in his bedroom, with an occult symbol carved into the door. The obvious culprit is the estranged son, upset that dad had something to do with mom's death.
The prosecutor Wen-chao is not so sure. Wen-chao suspects the CEO's second wife, who seems harmless but might be possessed by the vengeful spirit of the first wife.…

Tutorial: $\varphi$-Transductions in OpenFst via the Gallic Semiring
Marco Cognetta, Cyril Allauzen
https://arxiv.org/abs/2506.17942 https://

Tutorial: $φ$-Transductions in OpenFst via the Gallic Semiring
OpenFst, a popular finite-state transducer library, supports $φ$-transitions but, due to an implementation constraint, they cannot be used with transducers in a straightforward way. In this short tutorial, we describe how one can use other functionality provided by OpenFst (namely, the Gallic semiring) to correctly implement $φ$-transductions and demonstrate it by implementing the MaxMatch (WordPiece) tokenization algorithm (Devlin et al., 2019; Song et al., 2021). Accompanying self-contain…

Blue Lights, Insurmountable Debt, and the Affordances of its Erasure
https://ift.tt/pL6dIVC
By Justin Martin In The Dawn of Everything: A New History of Humanity (2021), anthropologist David…
via Input 4 RELCFP

Blue Lights, Insurmountable Debt, and the Affordances of its Erasure
By Justin Martin In The Dawn of Everything: A New History of Humanity (2021), anthropologist David Graeber and Archeologist David Wengrow set out to offer a new way of thinking about the human orig…

I understand why sensible people say not to trust "answers" from AI/LLM but I don't understand why they then act like that invalidates the usefulness of LLMs.
abbv dividends 2021 through 2025?
Answer for some reason lists a chart for Agilent Technologies, Inc.
Then lists a chart showing dividends for ABBV by year (including quarterly payment amounts).
I can see those amounts are close (probably exactly right...) and for my quick estimate good enough.

May It Be Time
#OriginalMusic #MusicVideos #NowPlaying

May It Be Time #NowPlaying
Stan Stewart - @muz4now

This https://arxiv.org/abs/2412.04265 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_eco…

On Extrapolation of Treatment Effects in Multiple-Cutoff Regression Discontinuity Designs
Regression discontinuity (RD) designs typically identify the treatment effect at a single cutoff point, which may not always be the primary interest. When and how, then, can we learn about treatment effects away from the cutoff? This paper addresses this question within a multiple-cutoff RD framework. We begin by examining the plausibility of the constant bias assumption proposed by Cattaneo, Keele, Titiunik, and Vazquez-Bare (2021) through the lens of rational decision-making behavior. We argu…

Fossile Energien verursachen hohe gesellschaftliche Kosten, werden aber weiterhin subventioniert.
Allein 2021 beliefen sich offene und versteckte #Subventionen laut #IWF auf 5900 Milliarden US-Dollar. Maßnahmen wie der

Tankrabatt: Wie wir uns zu Tode subventionieren
Die Verbrennung fossiler Brennstoffe richtet massive Schäden an. Dennoch wird sie gefördert – etwa durch den Tankrabatt. Dabei gäbe es sinnvolle Alternativen, von denen auch Geringverdiener profitieren.

Henry Ruggs breaks silence on fatal car crash, says he would 'love' to play for Raiders again

https://www.cbssports.com/nfl/news/henry-r

CoinMarketCap: bitcoin's share of crypto market value grew to 64% this year, highest since January 2021, and altcoins lost $300B , as big investors flock to BTC (Bloomberg)
https://www.bloomberg.com/news/articles/20

Chiefs WR Hollywood Brown vows to get back to 'best self' https://www.espn.com/nfl/story/_/id/45531855/chiefs-kansas-city-hollywood-brown-injury-history-2025

Timing and spectral variability in 2S 1417-624 observed with Insight-HXMT
Qi Liu, Lingda Kong, Can G\"ung\"or, Lorenzo Ducci, Long Ji, Wei Wang, Xiaohang Dai, Andrea Santangelo
https://arxiv.org/abs/2506.13557

Timing and spectral variability in 2S 1417-624 observed with Insight-HXMT
We present the results of the spectral and timing analyses of the accreting X-ray pulsar, 2S 1417-624, during the 2018 and 2021 outbursts with Insight-HXMT. We find that the pulse profiles in all energy bands exhibit clear double-peaked structures at low flux states. In the 1-10 keV band, the pulse profiles evolve from double to triple peaks at a flux level of $\sim$4.1$\ \times \ 10^{-9}$ erg cm$^{-2}$ s$^{-1}$, and from triple to quadruple peaks at $\sim$6.4$\ \times \ 10^{-9}$ erg cm$^{-2}$ …

Inner disc and circumplanetary material in the PDS 70 system
Daniele Fasano, Myriam Benisty, Pietro Curone, Stefano Facchini, Francesco Zagaria, Tomohiro C. Yoshida, Kiyoaki Doi, Anibal Sierra, Sean Andrews, Jaehan Bae, Andrea Isella, Nicol\'as T. Kurtovic, Laura M. P\'erez, Paola Pinilla, Luna Rampinelli, Richard Teague
https://

Inner disc and circumplanetary material in the PDS 70 system
The two giant protoplanets directly imaged in the dust-depleted cavity of PDS 70 offer a unique opportunity to study ongoing planet formation. Both planets have been detected in infrared thermal emission and in H$α$, indicating active accretion. We calibrate and analyse archival ALMA Band 6 and 7 observations of PDS 70 from 2019, 2021, and 2023 to search for circumplanetary material and assess its motion. Using 2D visibility modelling of the high-resolution (~0.11"x0.08" in Band 6; ~0.05"x0.05…