In this paper, by using Heath - H ( ? ) del - mappings we give a characterizationof C - Semi - stratifiable spacs, C - Nagata spaces, KC - semi - stratifiable spacesand K - semi - stratifiable spaces.

本文用Heath -H? del 映象给出C - 半 分层空间, C-Nagata空间, KC - 半分层空间和K - 半分层空间的一种刻划.

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