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Using Macaulay2, we first numerically find complex-valued $\\Gamma$-periodic potentials $V:\\mathbb{Z}^d\\to \\mathbb{C}$ such that the operators $\\Delta+V$ and $\\Delta$ are Floquet isospectral. 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Using Macaulay2, we first numerically find complex-valued $\\Gamma$-periodic potentials $V:\\mathbb{Z}^d\\to \\mathbb{C}$ such that the operators $\\Delta+V$ and $\\Delta$ are Floquet isospectral. 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