Since R-[WTHT]C and B-[WTHT]C both contain [WTHT]C as their full subcategory, a maximal Cartesian closed full subcategory of CONT must be closed with both retracts and bilimits of expanding- sequences.

 
  • 由于R-C和B-C都包含C為其滿(mǎn)子范疇,利用上述結果可得CONT的極大笛卡兒閉子范疇必對收縮和雙極限封閉。
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