### Frank Atanassow

Shared publicly -I came across the following sentence in a paper: "A natural interpretation of the objects of S^((C/0)^op) is that they are non-autonomous dynamical systems, such as arise from the solution of ordinary differential equations which contain “forcing” terms or whose inertial or frictional terms depend on time in some manner (such as

Just curious but, does anyone know what the word "usury" means here? Obviously it's not money-lending. A Google search turned up a scant few mentions on pages to do with materials engineering, such as, "good resistance to the usury, optimal resistance to the deformation..."

**usury**or heating) external to the self-interaction modeled by the differential equation itself."Just curious but, does anyone know what the word "usury" means here? Obviously it's not money-lending. A Google search turned up a scant few mentions on pages to do with materials engineering, such as, "good resistance to the usury, optimal resistance to the deformation..."

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Given the application of physical models in finance and economics, "usury" might well be construed straightforwardly.

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