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revised how to solve $\sqrt{x^2 -2x} -x =0$?
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comment Contraposition and law of excluded middle
@Materialist as far as I know (I am not an expert), the law of the excluded middle is formally equivalent to negation elimination. If we can obtain a statement without using negation elimination (i.e. without invoking $\neg\neg P \iff P$), we have proven it without making use of the law of the excluded middle. Here, we begin with, say, $(A\to B) \& \neg B$. If we can now show $\neg A$, then we've shown that $(A\to B)\to (B\to A)$. Now, assume $A$; we show that this leads to $B\&\neg B$, which allows us to conclude $\neg A$ without making use of the law of the excluded middle.
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revised Relationship between Binomial and Bernoulli?
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answered Relationship between Binomial and Bernoulli?
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answered Contraposition and law of excluded middle
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answered On prime(less)ness and composite(less)ness of 1
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comment What does “radical cube zero” mean?
For what it's worth, in mathematics, a "dimension" is not something that one can "enter". The dimension of a (vector) space is (roughly) the number of coordinates that it takes to fully specify a point in that space. So whatever references you've found to radical cubes (and I don't know what a radical cube is), it is doubtful that it has anything to do with entering or exiting other dimensions.
Jun
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comment solve the equation for x
Hello, I've changed your statement of the problem to LaTeX code, which I would recommend learning to get the most out of this site. Can you check to make sure that I've translated correctly?
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revised solve the equation for x
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