ドモルガンの法則 ほうそくじゃなかったです
domoruganno hōsokujanakattadesu

Noun
Desu Copula

The polite, past negative form of ドモルガンの法則

1. De Morgan's laws were not.; It wasn't De Morgan's laws.

Past/Perfective
Negative
Polite
Casual Register