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Other symbols I have seen used for "is defined to be equal to" are three horizontal lines instead of two, and $=$ with either a triangle or "def" written directly above it. I have seen variants of these used by people who predate widespread knowledge of computer programming. It would be interesting to know the earliest uses of a special symbol for this (and what symbols were chosen). An ...
In summary: The interplay of meaning and axiomatic machine mathematics, captured by the difference between $\models$ and $\vdash$, is a subtle and interesting thing.
On the topic of line breaks around a binary operator, it goes on to say: For decades the recommended style was to break after binary operators. But this can hurt readability in two ways: the operators tend to get scattered across different columns on the screen, and each operator is moved away from its operand and onto the previous line. In Python code, it is permissible to break before or ...
Is it possible to break a long line to multiple lines in Python?
I have some text in a table and I want to add a forced line break. I want to insert a forced line break without having to specify the column width, i.e. something like the following: \begin{tabular...
How to add a forced line break inside a table cell - TeX
You can use \par to obtain a new paragraph. It is different from \newline or \ which produce a line break (by the way, there is a \linebreak command, to break the line and justify the line before).