孤立 こりつ特異 とくい てんではありませんでした
koritsutokuitendewārimasendeshita

Noun
Desu Copula

The polite, past negative form of 孤立特異点

1. Was not an isolated singularity.; Was not a singular point of isolation.

Past/Perfective
Negative
Polite
Formal Register
Mathematics