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I'm studying minimizing boolean expressions using adjacent expressions...

However I'm not understanding this example

http://i.imgur.com/7g3R9Bo.png

Why are they repeating minterms? Why is this correct? When can I do this? Shouldn't the function be the sum on the minterms 0,1,3, 5 and 7 only ONE time?

Thanks!

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You need to include term 5 also.

The repetitions happens just because of the simplification process, is not on purpose.

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  • \$\begingroup\$ Right, I forgot to write that... But my doubt is about repeating term 1... \$\endgroup\$ – Granger Obliviate Mar 26 '16 at 17:28
  • \$\begingroup\$ It happens just because of the simplification process, is not on purpose. Can you write a simpler expression which does not include repeated terms? \$\endgroup\$ – berto Mar 26 '16 at 17:34
  • \$\begingroup\$ I think not, I tried not to include that term... It's like we're applying idempotency, right? But on reverse? \$\endgroup\$ – Granger Obliviate Mar 26 '16 at 18:10
  • \$\begingroup\$ ...that could be a way to look at it \$\endgroup\$ – berto Mar 26 '16 at 18:28

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