Took me a moment to process that one. I guess it's not an expression one would usually write, but i also just realised that i use spacing and different sizes of | (when by hand) to make it clearer. Nice example though :)
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I'd have to check but with LaTeX a \left| and \right| would probably produce larger pipes in nested expressions with absolute values. Also took me some time to see the ambiguity here.

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how could it be 5? |-1| - 2|-3| = 1- 6 = -5
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|(-1*|-2|-3)| = 5
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If that's |-2| then it has no operation?
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Correct! My thoughts exactly. Its syntax operation incompleteness, not game theory incompleteness of the entire structure. Even tho incompleteness def exists... it's just more abstract than that
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Yes: I wrote a parser for asciimath syntax, and it has an open bug from someone who encountered just such an ambiguity. It involved normal parentheses too, somehow
- Još 2 druga odgovora
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Wow, that never occurred to me, never spotted this problem...anyways when you see nested absolutes in school books they have usually different sizes (outer<->bigger).
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Tangent: Have long thought there should be comparable symbols or brackets for numbers and their reciprocals. So, if the brackets were
(I need a haircut!), then:
5
=
1/5
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