Tootfinder

Carbonate formation and fluctuating habitability on Mars: #Mars Science Laboratory Curiosity rover data may explain why planet was likely harsh desert for most of recent past.

New #video #discord

Discrete Fourier Transform versus Discrete Chi-Square Method
Lauri Jetsu
https://arxiv.org/abs/2509.01540 https://arxiv.org/pdf/2509.01540

Discrete Fourier Transform versus Discrete Chi-Square Method
We compare two time series analysis methods, the Discrete Fourier Transform (DFT) and our Discrete Chi-square Method (DCM). DCM is designed for detecting many signals superimposed on an unknown trend. The solution for the non-linear DCM model is an ill-posed problem. The backbone of DCM is the Gauss-Markov theorem that the least squares fit is the best unbiased estimator for linear regression models. DCM is a simple numerical time series analysis method that performs a massive number of linear …

Renewables, carbon and the energy crisis.
Based on a longer, fully referenced pamphlet, jointly published by @… and us available at link in article.
Right-wing critics largely deny the impact of fossil fuels on emissions, and therefore on the future prospects for humanity, but the net zero lobby is pursuing strategies that are inadequate a…

Renewables, carbon and the energy crisis
Article originally published at North West Bylines, 31 July, 2025 Based on a longer, fully referenced pamphlet, jointly published by Steady State Manchester and DegrowthUK available HERE Renewables…

On discrete gauging and non-invertible selection rules
Jun Dong, Tim Jeric, Tatsuo Kobayashi, Ryusei Nishida, Hajime Otsuka
https://arxiv.org/abs/2507.02375

On discrete gauging and non-invertible selection rules
We clarify selection rules of conjugacy classes of several finite discrete groups where we deal with both gauged and ungauged cases. We find that the selection rules enjoy finite Abelian or non-Abelian discrete symmetries originating from the inner and/or outer automorphism of underlying discrete groups. Since the selection rules of conjugacy classes do not obey conventional group-like selection rules, they open up new coupling selection rules of fields which are labeled by the conjugacy classe…

As a forum user from back in the 90s til recently, something that also bugs me, and apparently a lot of people, I felt this piece
'One last time, Discord is not a suitable replacement for forums': https://aftermath.site/discord-forums-

One Last Time, Discord Is Not A Suitable Replacement For Forums - Aftermath
They are not the same thing

Sufficient conditions for strong discrete maximum principles in finite element solutions of linear and semilinear elliptic equations
Andrei Draganescu, L. Ridgway Scott
https://arxiv.org/abs/2509.00932

Sufficient conditions for strong discrete maximum principles in finite element solutions of linear and semilinear elliptic equations
We introduce a novel technique for proving global strong discrete maximum principles for finite element discretizations of linear and semilinear elliptic equations for cases when the common, matrix-based sufficient conditions are not satisfied. The basic argument consists of extending the strong form of discrete maximum principle from macroelements to the entire domain via a connectivity argument. The method is applied to discretizations of elliptic equations with certain pathological meshes, a…

EFSA scientific report discredits EU fur farming systems #AnimalRights

EFSA scientific report discredits EU fur farming systems
A new scientific opinion published by the European Food Safety Authority (EFSA) confirms what Respect for Animals and other campaigners have been saying for decades, namely that the systems of fur …

🇺🇦 #NowPlaying on KEXP's #MorningShow
Joy Division:
🎵 Disorder
#JoyDivision
https://josephleeharris.bandcamp.com/track/joy-division-disorder
https://open.spotify.com/track/2WEw8oFZiANQzWdGElO3Mf

I made something weird and artsy and introspective or whateve rhttps://youtu.be/3jYe_2ODULQ #video #youtube #nature