Rediscovered theorem of Luzin
classification
🧮 math.LO
keywords
luzincategorydecipherdecomposeddecompositiondenseensemblesevery
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In 1934 N. N. Luzin proved in his short (but dense) paper \textit{Sur la decomposition des ensembles} that every set $X\subseteq \mathbb{R}$ can be decomposed into two full, with respect to Lebesgue measure or category, subsets. We will try to (at least partially) decipher the reasoning of Luzin and prove this result following his idea.
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