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3
a
m
0
0
x
1
;
2
a
1
m
x
3
a
a
2
()
μ
x
=
L
,
1
m
<
x
1
m
;
m
a
2
2
m
a
1
1
m
<
x
1
.
2
()
Fig. 2.1 shows membership functions of term
for a special case
;
X
L
x
= 1
x
m
x (membership functions of T -numbers). The special attention is given to
this special case because of large number of application of T -numbers and normal
triangular numbers in applied researches.
0
1
()
a
a
Fig. 2.1 Membership function
μ
x
under conditions: a —
, b —
m
m
1
m
a
>
a
m
m
1
a
>
a
2. If
, then
m
m
 
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