正規 せいき直交 ちょっこう基底 きていじゃなかったです
seikichokkōkiteijanakattadesu

Noun
Desu Copula

The polite, past negative form of 正規直交基底

1. Was not a normal orthogonal basis.; Wasn't a standard orthonormal basis.

Past/Perfective
Negative
Polite
Casual Register
Mathematics