Kronecker delta

短语

[数] 克罗内克符号

词形变化

Kronecker deltas 复数 Kronecker deltas

释义与例句

n.
  1. 1.

    A binary function, written as δ with two subscripts, which evaluates to 1 when its arguments are equal, and 0 otherwise.

    克罗内克尔δ

    数学

    The permutation symbol and the Kronecker delta prove to be very useful in proving vector identities.

  2. 2.

    A unary function, written as δ with a single index, which evaluates to 1 at zero, and 0 elsewhere.

    数学

词汇关系

名词

上位词 5

map function mapping mathematical function single-valued function

词源

Named after German mathematician Leopold Kronecker (1823–1891)

来源：wiktionary