Frobenius stamp problem

Prove that using stamps of 5 cents and stamps of 3 cents, one can pay all amounts greater than or equal to 8 cents. This is the Frobenius problem, instantiated for 3 and 5.


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Another solution, which doesn't use ring and omega, but an induction scheme on integers modulo n, was sent to us by Constantine Plotnikov. Download

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Pierre Castéran