A notation question is just about acceptable because, if you think about it, if someone knows that notation then they can very quickly say, "That's just the symbols for a flat hedgehog". This question is not in that league.
Also, questions on MO work best if once they are answered, they can be forgotten. Survey questions, and big-list questions, don't work so well here. Who really keeps going back to the big-list questions to check if the latest answers are good or not?
The primary principle to remember when asking a question on MO is that you are asking people to do something for nothing. So you need to make it easy for them to do that something and show how much you'll appreciate their efforts.
PS Yemon: enough that the mistakes get blurry.
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