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Sep
10
comment Can a function be applied to itself?
There's is one thing that isn't obvious to me: why do we need a map $g : B^A \mapsto A$? I don't understand what it is for.
Aug
10
comment Is there a basic “unit” of measurement in math
Can you please say the names of the sets $\mathbb{E}$ and $\mathbb{O}$ so I could read more about them? Thanks!
Jul
2
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Jun
25
comment Is it true that “there is no such thing as the square root of minus one”?
You could consider the square root to be a $\mathbb{R} \mapsto \mathbb{R}^2$ function, in which case the square root of something does exist at all times.
Apr
14
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4
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Mar
24
revised Does 'uncountable sequence' make sense?
added 2 characters in body
Mar
24
asked Does 'uncountable sequence' make sense?
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