恒等

Traditional form:

恆等

Pinyin (reading):

héngděng

Definitions:

• identity ≡ (math., logic)
• identical

Characters:

• 恒 - constant, persistent, regular
• 等 - rank, grade; same, equal; to wait

Traditional characters:

• 恆 - constant, persistent, regular
• 等 - rank, grade; same, equal; to wait