Example 6.3 (The amoeba, revisited) . [04K6]

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Example 6.3 (The amoeba, revisited).

Consider the fibration in Example 5.5. When restricted to $X-f^{-1}(\Delta)$ , $f$ defines a stitched Lagrangian fibration. The seam is $Z=\mu^{-1}(0)-f^{-1}(\Delta)$ , notice that in this case $Z$ has three connected components.