Mathematical symbols dictionary
–
identically equal,
– approximately
equal,
~ – approximately,
0.(12345) – the repeating decimal with the period 12345,
N – the set of natural numbers,
Z – the set of whole numbers (integers),
R – the set of real numbers,
– an empty set,
– an
infinity sign,
– an
element
x
belongs to a set
X
,
–
an element
x
doesn't belong to a set
X
,
X
Y
– a set
X
is a subset
of a set
Y
,
– a
union of sets
X
and
Y
,
– an
intersection of sets
X
and
Y
,
X \ Y – a symmetric difference of sets X and Y ,
{ u n } – a sequence with a general term u n ,
[ a , b ] – a numerical segment,
– numerical
semi-segments (semi-intervals),
( a , b ) – a numerical interval,
– a
scalar product of vectors
,
– a
vector product of vectors
,
==> – it follows,
<=> – equivalent,
– perpendicular,
– parallel,
– a
triangle
ABC,
– a
function and its derivative.
