Blurring and sharpening an image is equivalent to doing reaction diffusion!
youtu.be/7oCtDGOSgG8?...
youtu.be/7oCtDGOSgG8?...
What Happens if You Blur and Sharpen an Image 1000 Times?
YouTube video by Patrick Gillespie
youtu.be
November 6, 2025 at 11:46 AM
Blurring and sharpening an image is equivalent to doing reaction diffusion!
youtu.be/7oCtDGOSgG8?...
youtu.be/7oCtDGOSgG8?...
Ça tombe bien, j'ai écrit qques lignes dans La Terreur Masculiniste sur exactement cette problématique.
November 2, 2025 at 10:33 AM
Ça tombe bien, j'ai écrit qques lignes dans La Terreur Masculiniste sur exactement cette problématique.
Highlighting this Simons postdoc fellowship again. Looking for junior postdocs who might team up with Brian Enquist and me.
Keywords include nonlinear dynamics, reaction diffusion, population dynamics, metabolic scaling.
🧪🦋🌳
Keywords include nonlinear dynamics, reaction diffusion, population dynamics, metabolic scaling.
🧪🦋🌳
This is a great Simons foundation #postdoc opportunity for theorists with incipient interest. If you’re interested in working in quantitative laws of life in ecosystems, please message me.
Due date Dec. 4.
Note the 3 years w/in PhD condition.
#ecology #physics #maths
🧪🦋
Due date Dec. 4.
Note the 3 years w/in PhD condition.
#ecology #physics #maths
🧪🦋
Postdoc Opportunity - Interested in plant scaling, quantitative botany, or theoretical plant biology? join our group to explore how plant form, function & scaling principles connect across levels of organization
www.simonsfoundation.org/grant/simons-postdoctoral-fellowships-in-plant-biology🧪🌾🌐
www.simonsfoundation.org/grant/simons-postdoctoral-fellowships-in-plant-biology🧪🌾🌐
October 29, 2025 at 10:15 AM
Highlighting this Simons postdoc fellowship again. Looking for junior postdocs who might team up with Brian Enquist and me.
Keywords include nonlinear dynamics, reaction diffusion, population dynamics, metabolic scaling.
🧪🦋🌳
Keywords include nonlinear dynamics, reaction diffusion, population dynamics, metabolic scaling.
🧪🦋🌳
This project was largely inspired by the approach taken by Durrett and Levin in "The Importance of Being Discrete (and Spatial)", and particularly their comparisons of interacting particle models and reaction-diffusion equations in studying spatial games.
sites.math.duke.edu/~rtd/reprint...
sites.math.duke.edu/~rtd/reprint...
sites.math.duke.edu
October 10, 2025 at 3:28 AM
This project was largely inspired by the approach taken by Durrett and Levin in "The Importance of Being Discrete (and Spatial)", and particularly their comparisons of interacting particle models and reaction-diffusion equations in studying spatial games.
sites.math.duke.edu/~rtd/reprint...
sites.math.duke.edu/~rtd/reprint...
These are called "Green Islands" but look more like ring-shaped "Atolls" rather than ordinary islands.
Presumably formed by the reaction-diffusion of microbes, microbial secreted chemicals, and plant cell states.
Presumably formed by the reaction-diffusion of microbes, microbial secreted chemicals, and plant cell states.
October 4, 2025 at 6:31 AM
These are called "Green Islands" but look more like ring-shaped "Atolls" rather than ordinary islands.
Presumably formed by the reaction-diffusion of microbes, microbial secreted chemicals, and plant cell states.
Presumably formed by the reaction-diffusion of microbes, microbial secreted chemicals, and plant cell states.
Another one for you texture freaks
October 4, 2025 at 8:55 AM
Another one for you texture freaks
Disney+
Le président de la Commission fédérale des communications (FCC), Brendan Carr, a menacé de révoquer les licences de diffusion des chaînes de télévision diffusant l'émission de fin de soirée de l'humoriste Jimmy Kimmel d'ABC/Disney.
La réaction du public a été rapide : l'intérêt
...
1/3
Le président de la Commission fédérale des communications (FCC), Brendan Carr, a menacé de révoquer les licences de diffusion des chaînes de télévision diffusant l'émission de fin de soirée de l'humoriste Jimmy Kimmel d'ABC/Disney.
La réaction du public a été rapide : l'intérêt
...
1/3
September 22, 2025 at 4:49 PM
Disney+
Le président de la Commission fédérale des communications (FCC), Brendan Carr, a menacé de révoquer les licences de diffusion des chaînes de télévision diffusant l'émission de fin de soirée de l'humoriste Jimmy Kimmel d'ABC/Disney.
La réaction du public a été rapide : l'intérêt
...
1/3
Le président de la Commission fédérale des communications (FCC), Brendan Carr, a menacé de révoquer les licences de diffusion des chaînes de télévision diffusant l'émission de fin de soirée de l'humoriste Jimmy Kimmel d'ABC/Disney.
La réaction du public a été rapide : l'intérêt
...
1/3
He did contribute to our understanding of zebras. Via a mathematical reaction-diffusion model.
September 19, 2025 at 7:44 AM
He did contribute to our understanding of zebras. Via a mathematical reaction-diffusion model.
Starting with a microscopic reaction-advection-diffusion model, one can derive an SDE describing the limit of large (but finite) populations. Finite size effects can promote spatial pattern formation in regimes for which the uniform state is stable in the PDE limit. #SIAMDS21
December 20, 2024 at 5:00 AM
Starting with a microscopic reaction-advection-diffusion model, one can derive an SDE describing the limit of large (but finite) populations. Finite size effects can promote spatial pattern formation in regimes for which the uniform state is stable in the PDE limit. #SIAMDS21
Those pearl clutching at the reaction to a healthcare CEO being killed are totally missing that they’re defending corporate diffusion of responsibility and not morality
December 5, 2024 at 2:46 PM
Those pearl clutching at the reaction to a healthcare CEO being killed are totally missing that they’re defending corporate diffusion of responsibility and not morality
reaction-diffusion systems as well as their discretizations, featuring a non-convex dissipation functional. The convergence is then obtained with variational methods by building on the recently introduced notion of gradient systems in continuity [3/4 of https://arxiv.org/abs/2504.06837v1]
April 10, 2025 at 6:03 AM
reaction-diffusion systems as well as their discretizations, featuring a non-convex dissipation functional. The convergence is then obtained with variational methods by building on the recently introduced notion of gradient systems in continuity [3/4 of https://arxiv.org/abs/2504.06837v1]
love thsi one too though Reaction Diffusion is becoming far more important in EvoDevo than we original thorugh
November 23, 2024 at 12:23 AM
love thsi one too though Reaction Diffusion is becoming far more important in EvoDevo than we original thorugh
Shen Wang, Zhong-Jie Han, Kai Liu, Zhi-Xue Zhao
Output regulation for a reaction-diffusion system with input delay and unknown frequency
https://arxiv.org/abs/2504.14834
Output regulation for a reaction-diffusion system with input delay and unknown frequency
https://arxiv.org/abs/2504.14834
April 22, 2025 at 6:23 AM
Shen Wang, Zhong-Jie Han, Kai Liu, Zhi-Xue Zhao
Output regulation for a reaction-diffusion system with input delay and unknown frequency
https://arxiv.org/abs/2504.14834
Output regulation for a reaction-diffusion system with input delay and unknown frequency
https://arxiv.org/abs/2504.14834
Bon, c'est les vacances, personne à France Musique n'écoute la diffusion : depuis 5 minutes, il y a 5 secondes de silence toutes les 20 secondes et aucune réaction.
July 7, 2024 at 6:35 AM
Bon, c'est les vacances, personne à France Musique n'écoute la diffusion : depuis 5 minutes, il y a 5 secondes de silence toutes les 20 secondes et aucune réaction.
I got a ‘coral cup’ for @anikosandor and it looks even better in real life than on the @nervous_system webpage. Its design is based on the reaction-diffusion system, a model of pattern formation first described by Alan Turing. https://n-e-r-v-o-u-s.com/blog/?p=8222
November 13, 2024 at 9:49 AM
I got a ‘coral cup’ for @anikosandor and it looks even better in real life than on the @nervous_system webpage. Its design is based on the reaction-diffusion system, a model of pattern formation first described by Alan Turing. https://n-e-r-v-o-u-s.com/blog/?p=8222
Some notes (based on others' notes) on the relatively niche (but cool!) topic of Doi-Peliti field theory, which transforms stochastic processes governed by master equations (notably reaction-diffusion systems) into path integrals and has been applied to neural circuits.
dclark.io/media/clark-...
dclark.io/media/clark-...
dclark.io
February 7, 2025 at 12:50 AM
Some notes (based on others' notes) on the relatively niche (but cool!) topic of Doi-Peliti field theory, which transforms stochastic processes governed by master equations (notably reaction-diffusion systems) into path integrals and has been applied to neural circuits.
dclark.io/media/clark-...
dclark.io/media/clark-...
Thi Tam Dang, Lukas Einkemmer, Alexander Ostermann
An initial-corrected splitting approach for convection-diffusion-reaction problems
https://arxiv.org/abs/2502.09371
An initial-corrected splitting approach for convection-diffusion-reaction problems
https://arxiv.org/abs/2502.09371
February 14, 2025 at 6:50 AM
Thi Tam Dang, Lukas Einkemmer, Alexander Ostermann
An initial-corrected splitting approach for convection-diffusion-reaction problems
https://arxiv.org/abs/2502.09371
An initial-corrected splitting approach for convection-diffusion-reaction problems
https://arxiv.org/abs/2502.09371
Physicists have developed a method to control chemical wave patterns using hyperbolic fluid flows, potentially advancing the understanding of reaction-diffusion systems and wave propagation. doi.org/g8vd9d
Physicists introduce approach to control wave patterns via fluid flows
The reliable control of traveling waves emerging from the coupling of oscillations and diffusion in physical, chemical and biological systems is a long-standing challenge within the physics community.
phys.org
December 12, 2024 at 11:47 AM
Physicists have developed a method to control chemical wave patterns using hyperbolic fluid flows, potentially advancing the understanding of reaction-diffusion systems and wave propagation. doi.org/g8vd9d
AUTOMATIC REPOST OF OLD TWEETS FROM TWITTER (X) FOR ARCHIVING PURPOSES [22.07.2022] --- New preprint on "A coupled stochastic differential reaction-diffusion system for angiogenesis" by M. Fellner and A. Jüngel https://arxiv.org/abs/2206.11510
December 17, 2024 at 1:28 PM
AUTOMATIC REPOST OF OLD TWEETS FROM TWITTER (X) FOR ARCHIVING PURPOSES [22.07.2022] --- New preprint on "A coupled stochastic differential reaction-diffusion system for angiogenesis" by M. Fellner and A. Jüngel https://arxiv.org/abs/2206.11510
A continuum reaction-diffusion model for spread of gene silencing in chromosomal inactivation https://www.biorxiv.org/content/10.1101/2025.06.02.657345v1
June 4, 2025 at 6:07 PM
A continuum reaction-diffusion model for spread of gene silencing in chromosomal inactivation https://www.biorxiv.org/content/10.1101/2025.06.02.657345v1
\le p^+ < 2^* := \frac{2d}{d-2},
\]
where
$
p^- := \essinf_{(x,t) \in Q} p(x,t)
$
and
$
p^+ := \esssup_{(x,t) \in Q} p(x,t).
$
Consider the reaction-diffusion parabolic problem
\[
(P) \quad \left\{\begin{array}{ll} [2/4 of https://arxiv.org/abs/2506.04498v1]
\]
where
$
p^- := \essinf_{(x,t) \in Q} p(x,t)
$
and
$
p^+ := \esssup_{(x,t) \in Q} p(x,t).
$
Consider the reaction-diffusion parabolic problem
\[
(P) \quad \left\{\begin{array}{ll} [2/4 of https://arxiv.org/abs/2506.04498v1]
June 6, 2025 at 6:01 AM
\le p^+ < 2^* := \frac{2d}{d-2},
\]
where
$
p^- := \essinf_{(x,t) \in Q} p(x,t)
$
and
$
p^+ := \esssup_{(x,t) \in Q} p(x,t).
$
Consider the reaction-diffusion parabolic problem
\[
(P) \quad \left\{\begin{array}{ll} [2/4 of https://arxiv.org/abs/2506.04498v1]
\]
where
$
p^- := \essinf_{(x,t) \in Q} p(x,t)
$
and
$
p^+ := \esssup_{(x,t) \in Q} p(x,t).
$
Consider the reaction-diffusion parabolic problem
\[
(P) \quad \left\{\begin{array}{ll} [2/4 of https://arxiv.org/abs/2506.04498v1]
✍️ The @minclab.bsky.social contributed to the publication of a new article
📖 @biophysj.bsky.social
📃 Inferring diffusion, reaction, and exchange parameters from imperfect FRAP
🔗 www.cell.com/biophysj/abs...
📖 @biophysj.bsky.social
📃 Inferring diffusion, reaction, and exchange parameters from imperfect FRAP
🔗 www.cell.com/biophysj/abs...
August 11, 2025 at 7:58 AM
✍️ The @minclab.bsky.social contributed to the publication of a new article
📖 @biophysj.bsky.social
📃 Inferring diffusion, reaction, and exchange parameters from imperfect FRAP
🔗 www.cell.com/biophysj/abs...
📖 @biophysj.bsky.social
📃 Inferring diffusion, reaction, and exchange parameters from imperfect FRAP
🔗 www.cell.com/biophysj/abs...
Learning Reaction-Diffusion Kinetics from Mechanical Information
https://arxiv.org/pdf/2508.17523
Royal C. Ihuaenyi, Hongbo Zhao, Ruqing Fang, Ruobing Bai, Martin Z. Bazant, Juner Zhu.
https://arxiv.org/pdf/2508.17523
Royal C. Ihuaenyi, Hongbo Zhao, Ruqing Fang, Ruobing Bai, Martin Z. Bazant, Juner Zhu.
https://arxiv.org/abs/2508.17523
arXiv abstract link
arxiv.org
August 26, 2025 at 4:31 AM
Learning Reaction-Diffusion Kinetics from Mechanical Information
https://arxiv.org/pdf/2508.17523
Royal C. Ihuaenyi, Hongbo Zhao, Ruqing Fang, Ruobing Bai, Martin Z. Bazant, Juner Zhu.
https://arxiv.org/pdf/2508.17523
Royal C. Ihuaenyi, Hongbo Zhao, Ruqing Fang, Ruobing Bai, Martin Z. Bazant, Juner Zhu.
Shijie Shang, Pengyu Wang, Tusheng Zhang: $L^2$-solutions to stochastic reaction-diffusion equations with superlinear drifts driven by space-time white noise^ https://arxiv.org/abs/2509.12744 https://arxiv.org/pdf/2509.12744 https://arxiv.org/html/2509.12744
September 17, 2025 at 6:40 AM
Shijie Shang, Pengyu Wang, Tusheng Zhang: $L^2$-solutions to stochastic reaction-diffusion equations with superlinear drifts driven by space-time white noise^ https://arxiv.org/abs/2509.12744 https://arxiv.org/pdf/2509.12744 https://arxiv.org/html/2509.12744
REPOST OF OLD TWEETS [17.11.2023] --- New preprint on "Local asymptotics and optimal control for a viscous Cahn-Hilliard-reaction-diffusion model for tumor growth" by E. Davoli, E. Rocca, L. Scarpa, and L. Trussardi https://cvgmt.sns.it/paper/6295/
December 17, 2024 at 1:38 PM
REPOST OF OLD TWEETS [17.11.2023] --- New preprint on "Local asymptotics and optimal control for a viscous Cahn-Hilliard-reaction-diffusion model for tumor growth" by E. Davoli, E. Rocca, L. Scarpa, and L. Trussardi https://cvgmt.sns.it/paper/6295/