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Complementary discrete mathematics
Simplify first, then find a main paradigm, then find another main paradigm.

Specific process:

(P∧R)∨(Q∧R)∨? P

R∨(Q∧R)∨? P- separation absorption rate

R∨? P- separation absorption rate

Ordering of P∨R commutative laws

P∨(? Q∧Q)∞R supplement

(? P∨? Q∨R)∧(? P∨Q∨R) distribution law

Get the master conjunctive normal form, and then check the missing largest item.

m? ∧M∏(4,6)

∏(0, 1,2,3,5,7)? ∑(0, 1,2,3,5,7)? m? ∨m? ∨m? ∨m? ∨m? ∨m?

(P∨Q∨R)∨? (P∨Q∨? R)∨? (P∨? Q∨R)∨? (P∨? Q∨? R)∨? (? P∨Q∨? R)∨? (? P∨? Q∨? De Morgan's law

(? P∧? Q∧? r)∩(? P∧? Q∧R)∨(? P∧Q∧? r)∩(? P∧Q∧R)∨(P∧? Q∧R)∨(P∧Q∧R) De Morgan's Law

Get the principal disjunctive normal form