I got a few problems regarding writing domains. 1. If , . Instead of writing , can I write 2. For the range or , can I write 3. For or , can I write . Can I treat intervals as a set and union with other sets? Thanks a lot for those who help!
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Originally Posted by acc100jt I got a few problems regarding writing domains. 1. If , . Instead of writing , can I write 2. For the range or , can I write 3. For or , can I write . Can I treat intervals as a set and union with other sets? 1. Yes. 2. Yes. 3. Yes.
I would suggest you always go for the simplest, easiest to read notation. While is more rigorous than "for ", it makes it harder to read, and not everyone uses that notation for set difference, either.
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