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Subtraction is not associative. One cannot just move parentheses around like that with numbers either: 5 - (2 + 3) =/= (5 - 2) + 3 The same holds for elements
by pure-awesome 7y ago
Subtraction is not associative. One cannot just move parentheses around like that with numbers either:
5 - (2 + 3) =/= (5 - 2) + 3
The same holds for elements of a vector space.
- raverbashing 7y agoYou are correct I was about to say you were wrong, but you are correct, and it is a bit unintuitive why - https://www.quora.com/Is-vector-subtraction-associative https://www.quora.com/Is-vector-subtraction-associative
- EForEndeavour 7y agoMaybe I'm missing the point here, but what's so unintuitive about subtraction (vector or scalar) not being associative? Counterexamples seem easy to find. For example, 1 - 1 - 1 is not the same as 1 - (1 - 1).