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memorize the attained minimum over time in ODE


Hi,

I have an ODE that solves at each time step n something like

y'(n)=f(y(n-1),Min(y(n),y(n-1))

i.e., y' depends on the Minimum of y attained so far.

How do I implement that usind NDSolve? I cannot use algebraic equations,
because I used Method->StiffnessSwitching.

Thanks,

joerg


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