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2015-09-15 04:09:49 -0600 | asked a question | High memory usage when substituting variables I need to make a lot of variable substitutions in multivariate polynomials. However, I only need to store one polynomial at a time and I only need to make one substitution at a time. Nonetheless sage uses a lot of memory. This memory is not freed until sage is killed. Here is a small example: When i run Can you see why this is happening and do you know how to prevent it from happening? |

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