GRE数学符号英文表达

　　+ plus

　　- minus

　　 multiplied by ;times

　　 divided by

　　= equals

　　 approximately equals

　　 not equal to

　　 less than

　　 greater than

　　 equal to or less than

　　 equal to or greater than

　　round brackets ;parentheses

　　square brackets

　　{ }braces

　　 is a member of the set

　　is a subset of

　　∽ similar to

　　≌ congruent to

　　 denotes an operation

　　 therefore

　　∵ because

　　∶ ratio sign, divided by

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