Macaulay2 » Documentation
Packages » Macaulay2Doc » rings » basic rings of numbers » RRi » isMember(QQ,CCi)

next | previous | forward | backward | up | index | toc

isMember(QQ,CCi) -- membership test in an interval

Function: isMember
Usage:

isMember(x,I)
Inputs:
- x, a rational number, an integer, a real number, or a complex number,
- I, a complex interval,
Outputs:
- a Boolean value,

Description

Returns true if the input number is in the interval.

i1 : isMember(1,interval(2,3))

o1 = false

i2 : isMember(2,interval(1,3))

o2 = true

i3 : isMember(1+2*ii,interval(0,2+3*ii))

o3 = true

See also

isEmpty -- whether an object is empty

Ways to use this method:

isMember(CC,CCi)
isMember(CC,RRi)
isMember(QQ,CCi) -- membership test in an interval
isMember(QQ,RRi)
isMember(RR,CCi)
isMember(RR,RRi)
isMember(ZZ,CCi)
isMember(ZZ,RRi)

The source of this document is in Macaulay2Doc/doc_intervals.m2:197:0.