数学公式的英语读法

17.2.1999/H. V¨aliaho

Pronunciation of mathematical expressions

The pronunciations of the most common mathematical expressions are given in the list

below. In general, the shortest versions are preferred (unless greater precision is necessary).

1. Logic

∃ there exists

∀ for all

p ⇒ q p implies q / if p, then q

p ⇔ q p if and only if q /p is equivalent to q / p and q are equivalent

A ∪ B A cup B / A join B / A union B

A \ B A minus B / the difference between A and B

A × B A cross B / the cartesian product of A and B

3. Real numbers

x + 1 x plus one

x − 1 x minus one

x ± 1 x plus or minus one

xy xy / x multiplied by y

(x − y)(x + y) x minus y, x plus y

x