Since mathematics is a symbol-oriented subject,mathematical writing involves a mixture of words and symbols. Here are several guidelines to which a number of mathematicians adhere.
1. Never start a sentence with a symbol
Writing mathematics follows the same practice as writing all sentences, namely, that the first word should be capitalized. This is confusing if the sentence were to begin with a symbol since the sentence appears to incomplete. Also, in general, a sentence sounds better if it starts with a word. Instead of writinghas two distinct roots.
write: The equation x2 -6x 8 0 has two distinct roots
2. Separate symbols not in a list by words possible Separating symbols by words makes the sentence easier read and therefore easier to understand. The sentence: Except for a, b is the only root of C -a) b) 0 would be clearer if it were written as: Except for a, the number b is the only root o