开集

Traditional form:

開集

Pinyin (reading):

kāijí

Definitions:

• open set (math.)

Characters:

• 开 - to open; to start, to initiate, to begin
• 集 - to gather, to collect; set, collection

Traditional characters:

• 開 - to open; to start, to initiate, to begin
• 集 - to gather, to collect; set, collection