Principal Disjunctive form of the following












-1















I have to calculate the PDNF and PCNF of the following expression
$$(P longleftrightarrow Q) longleftrightarrow (P longleftrightarrow Q)$$



As it is a tautology so it will only have PDNF. I'm currently stuck at expanding this given equation as it has a huge expansion with many terms. Any simpler way possible ?



Thank you










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  • It is not necessary to expand. As you said, the formula is a tautology, is true for any choice of P, Q. So PDNF is PQ+P'Q+PQ'+P'Q' (or in any notation you use).

    – user376343
    Jan 3 at 19:53
















-1















I have to calculate the PDNF and PCNF of the following expression
$$(P longleftrightarrow Q) longleftrightarrow (P longleftrightarrow Q)$$



As it is a tautology so it will only have PDNF. I'm currently stuck at expanding this given equation as it has a huge expansion with many terms. Any simpler way possible ?



Thank you










share|cite|improve this question

























  • It is not necessary to expand. As you said, the formula is a tautology, is true for any choice of P, Q. So PDNF is PQ+P'Q+PQ'+P'Q' (or in any notation you use).

    – user376343
    Jan 3 at 19:53














-1












-1








-1








I have to calculate the PDNF and PCNF of the following expression
$$(P longleftrightarrow Q) longleftrightarrow (P longleftrightarrow Q)$$



As it is a tautology so it will only have PDNF. I'm currently stuck at expanding this given equation as it has a huge expansion with many terms. Any simpler way possible ?



Thank you










share|cite|improve this question
















I have to calculate the PDNF and PCNF of the following expression
$$(P longleftrightarrow Q) longleftrightarrow (P longleftrightarrow Q)$$



As it is a tautology so it will only have PDNF. I'm currently stuck at expanding this given equation as it has a huge expansion with many terms. Any simpler way possible ?



Thank you







discrete-mathematics boolean-algebra conjunctive-normal-form disjunctive-normal-form






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share|cite|improve this question













share|cite|improve this question




share|cite|improve this question








edited Jan 1 at 16:32









Arturo Magidin

261k32585906




261k32585906










asked Jan 1 at 7:22









Naman SoodNaman Sood

1




1













  • It is not necessary to expand. As you said, the formula is a tautology, is true for any choice of P, Q. So PDNF is PQ+P'Q+PQ'+P'Q' (or in any notation you use).

    – user376343
    Jan 3 at 19:53



















  • It is not necessary to expand. As you said, the formula is a tautology, is true for any choice of P, Q. So PDNF is PQ+P'Q+PQ'+P'Q' (or in any notation you use).

    – user376343
    Jan 3 at 19:53

















It is not necessary to expand. As you said, the formula is a tautology, is true for any choice of P, Q. So PDNF is PQ+P'Q+PQ'+P'Q' (or in any notation you use).

– user376343
Jan 3 at 19:53





It is not necessary to expand. As you said, the formula is a tautology, is true for any choice of P, Q. So PDNF is PQ+P'Q+PQ'+P'Q' (or in any notation you use).

– user376343
Jan 3 at 19:53










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