New answers tagged dialog
Use specific math symbols, not para-math or pseudo-programming. Some part of your users may not be familiar with math, so provide a description next to symbol. Group similar symbols (less & less or equal) into pairs. Consider using "belong/not belong to set" instead of "between".
I'd recommend the symbolic version, but with the following modifications: use mathematical symbols instead of programming language-specific ones (e.g. ≠) show the textual version of a symbol on hover (also set it for screen readers for accessibility)
I have been faced with a similar situation in the past. The question to ask would be - would ALL users interpret "symbols" the same way that you intended them to be? Probably not. Although your users may have a scientific background, you CANNOT be rest assured that everyone would interpret the symbols the same way or the way you intended it to be interpreted ...
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