Just a simple question I want to know how to do, google hasn't been a help.

Show that A + 0 = A

Is it something like, make A a 1 so its 1 + 0 = 1?

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- May 1st 2010, 09:39 AMgary223Show that A + 0 = A
Just a simple question I want to know how to do, google hasn't been a help.

Show that A + 0 = A

Is it something like, make A a 1 so its 1 + 0 = 1? - May 1st 2010, 09:40 PMaman_cc
- May 2nd 2010, 03:37 AMsirius0
For all A

A+0=A

Kind of self obvious but to prove like less obvious equalities perhaps the below is helpful

Transpose to A-A=0 - May 2nd 2010, 03:59 AMkompik
Is A a matrix? If so, are you working over arbitrary field, over reals...?

Nevertheless, to verify this for matrices you just have to look at each position, you get equality $\displaystyle a_{i,j}+0=a_{i,j}$, which is valid in any field (in particular, in reals).

However, it was just a guest that you mean matrices - you should have specified the context of your question. - May 8th 2010, 07:08 AMgary223
Its not a matrix. I'd imagine it has something to do with Boolean algebra?

- May 8th 2010, 10:13 PMDrexel28
- May 9th 2010, 02:06 AMHallsofIvy