Head noun: order
Postmodifier: of operation

Same concepts
http://dbpedia.org/resource/Order_of_operations

Broader concepts

labelprovenanceconfidence
thingisap:3643362300.658358
conceptisap:2262665680.528518
topicisap:3668195340.416409
problemisap:2232850560.396648
ruleisap:1970806180.313840
mathisap:1943224200.182015
conventionisap:2584022560.164856

Narrower concepts

labelprovenanceconfidence
multiplicationisap:1316988340.410944
divisionisap:3625361760.355807
bracketisap:318585740.337981
pemdaisap:3661064930.253877
mathematicsisap:4143875000.251198
factisap:907473480.205587
todayisap:3694990300.197343