There are signs in mathematics for "therefore" and "because," which are $\therefore$ and $\because$ respectively.
However, another frequently-used expression is "according to." Is there any symbol for that?
[Math] sign for “according to?”
article-writingnotationterminology
Best Answer
No, there isn't, and it isn't good practice to use mathematical/formalistic symbols in the middle of a sentence.
For instance:
"Now, Eq. (1) $\rightarrow$ that Eq. (2) is $\sim$ true,"
instead of
"Now, Eq. (1) implies that Eq. (2) is false,"
only makes the sentence more obscure. You could write out every sentence as a logical statement, but ask yourself, "what text would I rather read?" Your audience probably would choose the same.