Sure enough, Han Ziyue pointed at one of the words and laughed, "This... what does 'ideal' mean here? So weird? Is that word even in academic papers?"
"Do you need ideals to write papers?"
"Could it be about the legendary New Civilization School papers?"
Zhang Yuan covered his face, saying grumpily, "... a non-empty subset I of ring R, if for any two algebraic operations on R, it satisfies: for any a, b ∈ I, r ∈ R, a-b ∈ I, ra ∈ I, then I is called a left ideal of ring R. Similarly, there is a definition for right ideals."
"A non-empty subset I of ring R, if it is both a left and right ideal, is called a bilateral ideal of R, usually simply referred as R's ideal."
Come on, this is the most basic concept in mathematics.
Suddenly revealing her ignorance, Han Ziyue couldn't help but blush.
She stuck out her tongue and said, "You're no fun at all! Here I am teasing you, and you actually recite mathematical definitions."
