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math.CO2025
Structured Sunflowers
Nathanael Ackerman, Mary Leah Karker, Mostafa Mirabi
We call an infinite structure sunflowerable if whenever is isomorphic to with underlying set , consisting of finite sets of bounded s…
math.CO2025
Rainbow Threshold Graphs
Nathanael Ackerman, Mostafa Mirabi
We define a generalization of threshold graphs which we call -rainbow threshold graphs. We show that the collection of -rainbow threshold graphs do not satisfy the - la…
math.GN2025
Absoluteness of Fixed Points
Nathanael Ackerman, Mostafa Mirabi
We characterize those complete commutative positive linear ordered monoids such that whenever is a map from a Cauchy complete -metric space to itself, the existence of a…