- #1
Eclair_de_XII
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- TL;DR Summary
- Let ##A\subsetℝ## be bounded from above. Let ##f:A\rightarrow ℝ##. Then can I write the supremum of the image of ##A## through ##f## as ##\sup f(A)##, or do I have to write it as ##\sup\{f(x):x\in A\}##?
I'm just having random thoughts today, and I didn't know where to put this, since this isn't even a homework problem.
Anyway, is my way of writing the supremum of a set correct syntax-wise, or no?
Anyway, is my way of writing the supremum of a set correct syntax-wise, or no?