inf x ∈ X [ F ( x , 0 ) ] − sup y ∗ ∈ Y ∗ [ − F ∗ ( 0 , y ∗ ) ] {\displaystyle \inf _{x\in X}[F(x,0)]-\sup _{y^{*}\in Y^{*}}[-F^{*}(0,y^{*})]} ...
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