Daniel Cooney
@danielcooney1.bsky.social
Applied mathematician at the University of Illinois Urbana-Champaign. Interested in evolutionary game theory, differential equations, and modeling biological and social systems.
We saw that the shadow/ghost(👻) prevented coexistence of the fast and slow genes if protocell success most favored an even mix of the genes.
However, introducing a third replicator (a dimer linking together the two genes), we saw that coexistence could occur in three-type multilevel dynamics.
However, introducing a third replicator (a dimer linking together the two genes), we saw that coexistence could occur in three-type multilevel dynamics.
November 23, 2025 at 6:59 AM
We saw that the shadow/ghost(👻) prevented coexistence of the fast and slow genes if protocell success most favored an even mix of the genes.
However, introducing a third replicator (a dimer linking together the two genes), we saw that coexistence could occur in three-type multilevel dynamics.
However, introducing a third replicator (a dimer linking together the two genes), we saw that coexistence could occur in three-type multilevel dynamics.
When groups are best of with an intermediate mix of cooperators and defectors, no level of group-level selection could allow the population to achieve this optimal composition, and the population could not achieve an average payoff greater than the payoff achieved by an all-cooperator group.
November 23, 2025 at 5:01 AM
When groups are best of with an intermediate mix of cooperators and defectors, no level of group-level selection could allow the population to achieve this optimal composition, and the population could not achieve an average payoff greater than the payoff achieved by an all-cooperator group.
The PDE model was really fun to explore, because it was basically a two-level replicator equation: individual-level selection depends on personal payoff within groups and group-level selection favors groups whose achieve higher average payoffs.
November 23, 2025 at 4:21 AM
The PDE model was really fun to explore, because it was basically a two-level replicator equation: individual-level selection depends on personal payoff within groups and group-level selection favors groups whose achieve higher average payoffs.
Luo considered two strategies: cheaters with an individual-level replication advantage and cooperators that conferring a collective replication advantage to its group. Luo formulated a stochastic model for individual and group dynamics, deriving ODE and PDE models in the large population limit.
November 23, 2025 at 12:49 AM
Luo considered two strategies: cheaters with an individual-level replication advantage and cooperators that conferring a collective replication advantage to its group. Luo formulated a stochastic model for individual and group dynamics, deriving ODE and PDE models in the large population limit.
Wrapping up the session, Carolin Grumbach from Osnabrück University is giving a talk titled
"Allee Pits in Metapopulations: When Increasing Dispersal Can Backfire."
#SMB2025
"Allee Pits in Metapopulations: When Increasing Dispersal Can Backfire."
#SMB2025
July 18, 2025 at 5:42 PM
Wrapping up the session, Carolin Grumbach from Osnabrück University is giving a talk titled
"Allee Pits in Metapopulations: When Increasing Dispersal Can Backfire."
#SMB2025
"Allee Pits in Metapopulations: When Increasing Dispersal Can Backfire."
#SMB2025
Now Yun Kang from Arizona State University is giving a talk on "Migration Dynamics and Collective Decision-Making in Social Insect Colonies".
#SMB2025
#SMB2025
July 18, 2025 at 5:22 PM
Now Yun Kang from Arizona State University is giving a talk on "Migration Dynamics and Collective Decision-Making in Social Insect Colonies".
#SMB2025
#SMB2025
Now I am sitting in on part two of this session, which is starting with a talk by Wenxian Shen from Auburn University on "Front Propagation Dynamics in Fisher KPP Equations on Unbounded Metric Graphs".
#SMB2025
#SMB2025
July 18, 2025 at 4:29 PM
Now I am sitting in on part two of this session, which is starting with a talk by Wenxian Shen from Auburn University on "Front Propagation Dynamics in Fisher KPP Equations on Unbounded Metric Graphs".
#SMB2025
#SMB2025
Wrapping up the afternoon portion of this #SMB2025 session, Chunyi Gai from the University of Northern British Columbia is giving a talk on
"Resource-mediated Competition between Two Plant Species with Different Rates of Water Intake".
"Resource-mediated Competition between Two Plant Species with Different Rates of Water Intake".
July 17, 2025 at 11:25 PM
Wrapping up the afternoon portion of this #SMB2025 session, Chunyi Gai from the University of Northern British Columbia is giving a talk on
"Resource-mediated Competition between Two Plant Species with Different Rates of Water Intake".
"Resource-mediated Competition between Two Plant Species with Different Rates of Water Intake".
Next up is Adrian Lam from the Ohio State University, who is giving a talk on the question "Can Spatial Heterogeneity Alone Lead to Selection for Dispersal?".
#SMB2025
#SMB2025
July 17, 2025 at 10:32 PM
Next up is Adrian Lam from the Ohio State University, who is giving a talk on the question "Can Spatial Heterogeneity Alone Lead to Selection for Dispersal?".
#SMB2025
#SMB2025
The first speaker is @sebastianschreiber.bsky.social from UC Davis, who is giving a talk on the "Impacts of the Tempo and Mode of Environmental Fluctuations on Population Growth".
July 17, 2025 at 10:16 PM
The first speaker is @sebastianschreiber.bsky.social from UC Davis, who is giving a talk on the "Impacts of the Tempo and Mode of Environmental Fluctuations on Population Growth".
Finishing off the session, David Sabin-Miller from the University of Michigan is giving a talk on "Data-driven modeling of US information-ideological dynamics".
#SMB2025
#SMB2025
July 16, 2025 at 5:44 PM
Finishing off the session, David Sabin-Miller from the University of Michigan is giving a talk on "Data-driven modeling of US information-ideological dynamics".
#SMB2025
#SMB2025
Next up, Alexandria Volkening from Purdue University is giving a talk on "Forecasting U.S. elections with compartmental models of infection".
#SMB2025
#SMB2025
July 16, 2025 at 5:03 PM
Next up, Alexandria Volkening from Purdue University is giving a talk on "Forecasting U.S. elections with compartmental models of infection".
#SMB2025
#SMB2025
The first talk is by Olivia Chu from Bryn Mawr College, who is gicing a talk on "Adaptive network models and the dynamics of political polarization and social activism".
#SMB2025
#SMB2025
July 16, 2025 at 4:36 PM
The first talk is by Olivia Chu from Bryn Mawr College, who is gicing a talk on "Adaptive network models and the dynamics of political polarization and social activism".
#SMB2025
#SMB2025
Because this visit lines up with the @smbmathbiology.bsky.social Annual Meeting in Edmonton, I may not be the only person in Edmonton that week who makes a reference to the @yhdistyminen.bsky.social Bob's Burgers urbanism meme!
July 10, 2025 at 4:43 AM
Because this visit lines up with the @smbmathbiology.bsky.social Annual Meeting in Edmonton, I may not be the only person in Edmonton that week who makes a reference to the @yhdistyminen.bsky.social Bob's Burgers urbanism meme!
Next up, Brian Mintz (Dartmouth College) is giving a talk on evolutionary multi-agent reinforcement learning, exploring how reinforcement learning agents can achieve cooperation in public goods games.
May 8, 2025 at 5:35 PM
Next up, Brian Mintz (Dartmouth College) is giving a talk on evolutionary multi-agent reinforcement learning, exploring how reinforcement learning agents can achieve cooperation in public goods games.
Here is an excerpt of the article focusing on the proof parties.
February 12, 2025 at 6:03 AM
Here is an excerpt of the article focusing on the proof parties.
While working on this project in grad school, I really enjoyed coming up with the term "ghost (👻) of lower-level selection". I was so committed to the bit that I pulled an all-nighter on October 30th so that I my first preprint on the this would appear on Halloween.
November 15, 2024 at 4:02 AM
While working on this project in grad school, I really enjoyed coming up with the term "ghost (👻) of lower-level selection". I was so committed to the bit that I pulled an all-nighter on October 30th so that I my first preprint on the this would appear on Halloween.
In particular, even in the limit of infinitely strong group-level competition, the population achieved substantially less cooperation than was optimal for the group.
It seemed like there was a ghost (👻) of lower-level selection favoring defectors, casting a long shadow on the multilevel dynamics.
It seemed like there was a ghost (👻) of lower-level selection favoring defectors, casting a long shadow on the multilevel dynamics.
November 14, 2024 at 6:25 AM
In particular, even in the limit of infinitely strong group-level competition, the population achieved substantially less cooperation than was optimal for the group.
It seemed like there was a ghost (👻) of lower-level selection favoring defectors, casting a long shadow on the multilevel dynamics.
It seemed like there was a ghost (👻) of lower-level selection favoring defectors, casting a long shadow on the multilevel dynamics.
I am happy to share this new preprint with Konstantinos Alexiou on "Steady-State and Dynamical Behavior of a PDE Model of Multilevel Selection with Pairwise Group-Level Competition".
arxiv.org/abs/2411.08387
👻🧪
arxiv.org/abs/2411.08387
👻🧪
November 14, 2024 at 5:37 AM
I am happy to share this new preprint with Konstantinos Alexiou on "Steady-State and Dynamical Behavior of a PDE Model of Multilevel Selection with Pairwise Group-Level Competition".
arxiv.org/abs/2411.08387
👻🧪
arxiv.org/abs/2411.08387
👻🧪
I am really excited to give a talk today at a local seminar on models of multilevel selection.
Although I did not pick the date to present, it is a fun coincidence that I will get to talk about a behavior I call the shadow/ghost(👻) of lower-level selection in the same week as Halloween.
Although I did not pick the date to present, it is a fun coincidence that I will get to talk about a behavior I call the shadow/ghost(👻) of lower-level selection in the same week as Halloween.
October 28, 2024 at 1:42 PM
I am really excited to give a talk today at a local seminar on models of multilevel selection.
Although I did not pick the date to present, it is a fun coincidence that I will get to talk about a behavior I call the shadow/ghost(👻) of lower-level selection in the same week as Halloween.
Although I did not pick the date to present, it is a fun coincidence that I will get to talk about a behavior I call the shadow/ghost(👻) of lower-level selection in the same week as Halloween.
I have to assume that Plante Moran is the preferred accounting firm for evolutionary game theorists.
July 13, 2024 at 1:55 PM
I have to assume that Plante Moran is the preferred accounting firm for evolutionary game theorists.
Steve Pearce is also great for Immaculate Grid because he and Kelly Johnson both played for every AL east team.
March 28, 2024 at 12:40 PM
Steve Pearce is also great for Immaculate Grid because he and Kelly Johnson both played for every AL east team.
I'm not very good at this game, but it worked out that yesterday's grid could feature a lot of former Mets who played for different team pairs. #LGM
⚾️ Immaculate Grid 122 8/9:
Rarity: 151
🟩🟩🟩
🟩🟩🟩
⬜️🟩🟩
Play at:
https://dir.lat/U7RRon
@immaculategrid x @baseball_ref
⚾️ Immaculate Grid 122 8/9:
Rarity: 151
🟩🟩🟩
🟩🟩🟩
⬜️🟩🟩
Play at:
https://dir.lat/U7RRon
@immaculategrid x @baseball_ref
December 20, 2024 at 1:14 AM
I'm not very good at this game, but it worked out that yesterday's grid could feature a lot of former Mets who played for different team pairs. #LGM
⚾️ Immaculate Grid 122 8/9:
Rarity: 151
🟩🟩🟩
🟩🟩🟩
⬜️🟩🟩
Play at:
https://dir.lat/U7RRon
@immaculategrid x @baseball_ref
⚾️ Immaculate Grid 122 8/9:
Rarity: 151
🟩🟩🟩
🟩🟩🟩
⬜️🟩🟩
Play at:
https://dir.lat/U7RRon
@immaculategrid x @baseball_ref
I'm really happy to share that I will be joining @UofIllinois next month as an assistant professor in the Department of Mathematics.
I'm excited to take part in the UIUC applied math and theoretical biology communities and to meet fellow researchers in Urbana-Champaign.
I'm excited to take part in the UIUC applied math and theoretical biology communities and to meet fellow researchers in Urbana-Champaign.
December 20, 2024 at 1:14 AM
I'm really happy to share that I will be joining @UofIllinois next month as an assistant professor in the Department of Mathematics.
I'm excited to take part in the UIUC applied math and theoretical biology communities and to meet fellow researchers in Urbana-Champaign.
I'm excited to take part in the UIUC applied math and theoretical biology communities and to meet fellow researchers in Urbana-Champaign.