my friend told me this non-obvious prop. I think false,but I can't understand. Does anyone solve this problem?
2026-05-05 03:35:20.1777952120
f:Lebesgue measurable function ⇆ ∀ε>0, ∃g:continuous function s.t. λ({x|f(x)≠g(x)})<ε
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