A Borel chain condition of T(X)

Borel Chain Conditions of Borel Posets

“…For another interesting example that fails the Borel σ-finite chain condition and the usual σ-bounded chain condition, but satisfies the σ-finite chain condition, see [10].…”

Borel chain conditions of Borel posets

“…For another interesting example that fails Borel σ-finite chain condition and the usual σ-bounded chain condition but satisfies σ-finite chain condition, see [11].…”