+ plus ;positive
- minus ;negative
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 o
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, is to
∷ equals, as
∥ parallel to
perpendicular to, at right angles with
angle
∟ right angle
o degree
minute
second
⊙ circle
A?B arc AB
e the base of natural logarithms,approx.2.71828
x! factorial x, x---1
lognx log x to the base n
pi
lnx log x to the base e
lgx log x to the base 10
|x| the absolute value of x
以上就是新GRE数学常用符号英文注释的整理,这些常用符号在新GRE数学中经常出现,希望考生们能够认真背诵下来。
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