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math.CO2025
The column number for 3-modular matrices
Joseph Paat, Zach Walsh, Luze Xu
An integer-valued matrix is -modular if each submatrix has determinant at most in absolute value. The c…
math.OC2025
Improved Mixing and Pressure Loss Formulations for Gas Network Optimization
Geonhee Kim, Christopher Lourenco, Daphne Skipper +1
Non-convex, nonlinear gas network optimization models are used to determine the feasibility of flows on existing networks given constraints on network flows, gas mixing, and pressu…