Tootfinder

On the isotopies of tangles in periodic 3-manifolds using finite covers
Yuka Kotorii, Sonia Mahmoudi, Elisabetta Matsumoto, Ken'ichi Yoshida
https://arxiv.org/abs/2505.20940

On the isotopies of tangles in periodic 3-manifolds using finite covers
A periodic tangle is a one-dimensional submanifold in $\mathbb{R}^3$ that has translational symmetry in one, two or three transverse directions. A periodic tangle can be seen as the universal cover of a link in the solid torus, the thickened torus, or the three-torus, respectively. Our goal is to study equivalence relations of such periodic tangles. Since all finite covers of a link lift to the same periodic tangle, it is necessary to prove that isotopies between different finite covers are pre…

New test unmasks illegal elephant ivory disguised as mammoth #AnimalRights

New test unmasks illegal elephant ivory disguised as mammoth
Poachers are using a sneaky loophole to bypass the international ivory trade ban—by passing off illegal elephant ivory as legal mammoth ivory. Since the two types look deceptively similar, law enforcement struggles to tell them apart, especially when tusks are carved or polished. But scientists may have found a powerful new tool: stable isotope analysis.

🇺🇦 #NowPlaying on KEXP's #VarietyMix
Erika de Casier:
🎵 Miss
#ErikadeCasier
https://jalenjones.bandcamp.com/track/erika-de-casier-miss-jalen-jones-ukg-bootleg
https://open.spotify.com/track/3iewIkYTvvaicW8iysqxuU

This https://arxiv.org/abs/2310.17893 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Ab initio no-core shell-model study of $^{20-23}$Na isotopes
We have done a systematic no-core shell-model study of $^{20-23}$Na isotopes. The low-energy spectra of these sodium isotopes consisting of natural and un-natural parity states were reported, considering three realistic interactions: inside nonlocal outside Yukawa (INOY), charge-dependent Bonn 2000 (CDB2K), and the chiral next-to-next-to-next-to-leading order (N$^3$LO). We also present the mirror energy differences in the low-energy spectra of $|T_z|$ = 1/2 mirror pair ($^{21}$Na - $^…

This https://arxiv.org/abs/2412.11648 has been replaced.
initial toot: https://mastoxiv.page/@arXiv_nuc…

Isotopic Transparency in Central Xe+Sn Collisions at 100 MeV/nucleon
A new method, based on comparing isotopic yield ratios measured at forward and sideward polar angles and on cross-bombarding heavy nuclei with different neutron-to-proton ratios, is used to quantify the stopping power of nuclear matter in heavy-ion collisions. For central collisions of isotopically separated $^{124,129}$Xe+$^{112,124}$Sn at 100~MeV/nucleon bombarding energy, measured with the 4$π$ multidetector INDRA at GSI, a moderate transparency is deduced for hydrogen isotopes, whereas for…

And how am i suppose to tell my wife that yes i will play a game about digging a hole and yes i paid for it real money. I hope this game doesn’t run on Proton
#gaming

btw iZotope Tonal Balance Control 2 is free to claim for a couple days https://www.izotope.com/products/tonal-balance-control-2.html

Reduced and mixed precision turbulent flow simulations using explicit finite difference schemes
B\'alint Sikl\'osi, Pushpender K. Sharma, David J. Lusher, Istv\'an Z. Reguly, Neil D. Sandham
https://arxiv.org/abs/2505.20911

Reduced and mixed precision turbulent flow simulations using explicit finite difference schemes
The use of reduced and mixed precision computing has gained increasing attention in high-performance computing (HPC) as a means to improve computational efficiency, particularly on modern hardware architectures like GPUs. In this work, we explore the application of mixed precision arithmetic in compressible turbulent flow simulations using explicit finite difference schemes. We extend the OPS and OpenSBLI frameworks to support customizable precision levels, enabling fine-grained control over pr…

Uniqueness of free 2-periodicities of links
Ken'ichi Yoshida
https://arxiv.org/abs/2505.22282 https://arxiv.org/pdf/2505.22282

Uniqueness of free 2-periodicities of links
We show that if two links in the real projective 3-space $\mathbb{RP}^{3}$ have isotopic preimages in the 3-sphere $S^{3}$ by the double covering map, then they are themselves isotopic in $\mathbb{RP}^{3}$.

Ideal Triangulations and Once-Punctured Surface Bundles
Birch Bryant
https://arxiv.org/abs/2505.21798 https://arxiv.org/pdf/2505.2179…

Ideal Triangulations and Once-Punctured Surface Bundles
A well-known result of Walsh states that if $\mathcal T^*$ is an ideal triangulation of an atoroidal, acylindrical, irreducible, compact 3-manifold with torus boundary components, then every properly embedded, two-sided, incompressible surface $S$ is isotopic to a spun-normal surface unless $S$ is isotopic to a fiber or virtual fiber. Previously it was unknown if for such a 3-manifold an ideal triangulation in which a fiber spun-normalizes exists. We give a proof of existence and give an algori…