単調 たんちょう増加 ぞうか数列 すうれつじゃなかったです
tanchōzōka sū retsujanakattadesu

Noun
Desu Copula

The polite, past negative form of 単調増加数列

1. Wasn't a monotonically increasing sequence.

Past/Perfective
Negative
Polite
Casual Register
Mathematics