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Can you provide an example where equals sign is not equality I'm curious.
by Guthur 9y ago
Can you provide an example where equals sign is not equality I'm curious.
- mkl 9y agoDefining things, usually preceded by "let", "if", etc.: "let f(x) = 2x+1" or "let w = 2", etc. Sometimes mathematicians us ":=" to be clearer and shorter.
- webbles 9y agoWhen you aren't strictly referring to an equation.
- j2kun 9y agoMost equivalence relations eventually drop any special notation in favor of = In general, = is not rigorous. It's used as a stand-in for the word "is". Another example is when someone writes x = 1, ..., N, meant to imply x is changing, not that x is equal to a tuple. Also the index in summation notation, which really is an assignment as in programming. I could go on.
- pedasmith 9y agoHow about Σ Sigma notation for summation? It's often written with something like i=1 at the bottom and 1000 at the top to denote the summation from 1 to 1000. The Wikipedia article at https://en.wikipedia.org/wiki/Summation https://en.wikipedia.org/wiki/Summation has some examples.