Timeline for Might it be helpful for students to have different symbols for subtraction (-) and negation ( _ )?
Current License: CC BY-SA 3.0
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| Dec 13, 2017 at 14:40 | comment | added | Dominique | "Indication" is not the standard term, I agree, but you can understand what I mean. And about the difference between -(3) and -3: "-(3)" means "take the negation of 3" and "-3" is the negative number, on a distance of 3 left to the number 0. And about 0: there is "positive" which is equal to ">=0" and strictly positive which is ">0", as a result 0 is both positive and negative, but not strictly positive or strictly negative. | |
| Dec 13, 2017 at 13:52 | comment | added | Daniel R. Collins | Under standard definitions (in English?): "Indication" is not a standard term. $0$ is neither positive nor negative. There is no difference between $-(3)$ and $-3$. | |
| Dec 13, 2017 at 9:07 | history | answered | Dominique | CC BY-SA 3.0 |