I am trying to get some of the more abstract math symbols and utilize them in Adobe Fireworks with limited success. I use the character map feature of windows and cut and paste. It does not work for most symbols. Is there another option?
Examples not working for me
∲ ∯ ⊆
This Adobe forum seems to suggest changing your font to Arial Unicode MS: https://forums.adobe.com/thread/661251
For myself, Character Map seems to work reliably, although I am using "FontAwesome", not mathematical symbols.
You can also try directly typing the character code using Alt + [type numerical code of font].
Hope this helps!