随伴 ずいはん行列 ぎょうれつじゃありませんでした
zuihangyōretsujārimasendeshita

Noun
Desu Copula

The polite, past negative form of 随伴行列

1. Was not accompanying.; Was not in the entourage.; Was not with the group.

Past/Perfective
Negative
Polite
Terminal Form
Mathematics