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Semi-definite program for smooth min-entropy
The conditional min-entropy is defined as (wiki):
$$
H_{\min}(A|B)_{\rho} \equiv -\inf_{\sigma_B}\inf_{\lambda}\{\lambda \in \mathbb{R}:\rho_{AB} \leq 2^{\lambda} \mathbb{I} \otimes \sigma_B\}
$$
And ...