Somebody asked me how absolute value of a real number can be defined. I said |a| is defined as +a if a>=0 and -a if a<0 (instead of, |a| is defined as a if a>=0 and -a if a<0). Then came an objection that with such a definition if a=0 its absolute value should be +0 and there's no such thing.//<![CDATA[ aax_getad_mpb({ "slot_uuid":"f485bc30-20f5-4c34-b261-5f2d6f6142cb" }); //]]>

Can't one define -0 and +0 in integer number set such that +0=-0=0?

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# Do +0 and -0 make sence?

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