单射

Traditional form:

單射

Pinyin (reading):

dānshè

Definitions:

• (math.) one-to-one function; injective map

Characters:

• 单 - single, individual, only; lone
• 射 - to shoot, to eject, to emit

Traditional characters:

• 單 - single, individual, only; lone
• 射 - to shoot, to eject, to emit