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Topic: Multiplication by 0: non-zero in versions 8 and 9
Replies: 2   Last Post: Jun 17, 2013 6:20 AM

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sbonano@inp.demokritos.gr

Posts: 7
Registered: 10/18/07
Multiplication by 0: non-zero in versions 8 and 9
Posted: Jun 15, 2013 4:16 AM
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Hello ,

I have noticed that in all Mathematica versions <8, multiplying a real or complex number by the integer 0 gives 0, but in versions 8 and 9

Times[0, 0.567] gives 0.

and

Times[1.23 + I 2.45, 0] gives 0. + 0. I

I don't know what prompted this change but it is definitely wrong: the zero property of multiplication holds for real and complex numbers also (see https://en.wikipedia.org/wiki/Multiplication#Properties) .

Sotirios Bonanos
http://www.inp.demokritos.gr/~sbonano/





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