The results of minimizing PDNF do not converge

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SUMMARY

The discussion focuses on the minimization of the Perfect Disjunctive Normal Form (PDNF) using the Quine method and Karnaugh map for a function defined by the vector of values (2, 3, 4, 6, 7, 12, 15). The user, urugvai, encounters a discrepancy of one term between the results of the two methods. It is clarified that the second term from the Quine method can be omitted as it is already covered by the first and third terms, indicating that the Karnaugh map provides a more minimal representation.

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urugvai
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I have a function defined by a vector of values (2 3 4 6 7 12 15), from the truth table I compose the PDNF, I minimize it first by the Quine method, then by the Karnaugh map, the results differ by one term
I can’t understand what the error is
Karnaugh map
 

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urugvai said:
I have a function defined by a vector of values (2 3 4 6 7 12 15), from the truth table I compose the PDNF, I minimize it first by the Quine method, then by the Karnaugh map, the results differ by one term
I can’t understand what the error is
Karnaugh map

Hi urugvai,

The second term from your application of the Quine method can be omitted without loss of coverage.
We can map it in the Karnaugh diagram and see that it is already covered by the first and third term of the Quine form.
 
Klaas van Aarsen said:
Hi urugvai,

The second term from your application of the Quine method can be omitted without loss of coverage.
We can map it in the Karnaugh diagram and see that it is already covered by the first and third term of the Quine form.

Thank you for saying that this is part of the norm.
As I understand it, the Quine method with four variables gives an abbreviated PDNF, and the Karnaugh diagram gives minimal?
 

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