# Reproducible BLAS: Make Addition Associative Again!

Hardware and software vendors and standards committees are addressing the challenge of reproducibility.

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Hardware and software vendors and standards committees are addressing the challenge of reproducibility.

In this month's column on "Mathematical Curiosities," Mark Levi contemplates moon angles and the lunar tilt illusion.

Christopher Strickland presented a sobering model of prescription opioid addiction and treatment during MPE18.

At MPE18, Michael Kelly presented a mathematical model to optimize oral cholera vaccination placement in Cameroon.

At LS18, Orit Peleg used a combination of experiments and simulations to model mechanical swarm stability in honeybee populations.

At MPE18, Rana Parshad described an ODE model for crab-mussel interactions in the presence of epibionts.

Sea ice permeability is affected by extracellular polymeric substances secreted by algae that inhabit ice.

Mahir Demir used a spatial food chain model to investigate harvest strategies for anchovy fisheries on the Black Sea at MPE18.

At MPE18, Pedro Gajardo described use of viability theory to tackle social problems, such as epidemiology and resource exploitation.

Orou Gaoue presented a model that optimizes nonlethal NTFP harvest and lethal timber harvest in tropical forests at MPE18.

At MPE18, Whitney Huang discussed hurricane modeling and used computer simulation to predict consequential storm surge.

In his John von Neumann Lecture at AN18, Charles Van Loan spoke about the untangling of random polygons.

Volker Mehrmann overviewed of his work with differential-algebraic equations during a prize lecture at AN18.