単調 たんちょう増加 ぞうか数列 すうれつではありませんでした
tanchōzōka sū retsudewārimasendeshita

Noun
Desu Copula

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

1. Was not a monotonically increasing sequence.

Past/Perfective
Negative
Polite
Formal Register
Mathematics