Connectivity Index in Vague Graphs with Application in Construction

Table 1

Some basic notations.

Notation	Meaning
FG	Fuzzy graph
VG	Vague graph
CVG	Connected vague graph
VS	Vague set
MV	Membership value
PVSG	Partial vague subgraph
VSG	Vague subgraph
VT	Vague tree
ACI	Average connectivity index
VCRN	Vague connectivity reducing node
VCEN	Vague connectivity enhancing node
VCNN	Vague connectivity neutral node
CEVG	Connectivity enhancing vague graph
CRVG	Connectivity reducing vague graph
NVG	Neutral vague graph
OND	Open neighborhood degree
RI	Randic index
CI	Connectivity index