Discrete mathematics
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离散数学 Discrete Mathematics PowerPoint PPT Presentation


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离散数学 Discrete Mathematics. 第一章 命题逻辑 第 4 讲 §1—6 其他连结词. 前面已经定义了 5 种联结词: ┐ , ∧ , ∨ , → 和 ,但这些联结词还不能广泛地直接表达命题间的联系,下面再定义 4 种命题联结词:. 一、不可兼析取(异析取). 表 1-6.1. (5)(P Q)  ┐(P  Q). ∨. 如果 P. Q R. ∨. 4. 定理. 证明. 则. 二、条件否定 定义

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离散数学 Discrete Mathematics

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Discrete Mathematics


4 16


5 4


1-6.1


(5)(P Q) (P Q)


P

Q R

4.


  • 1-6.2 PQP QPQP QTPTQFP QF

1-6.2

2.

1-6.2


2

1-6.3

2.

1-6.3


3.

(a) PQQP

(b) PP P

(c) (PQ)(PQ)PQ

(d) (PP)(QQ)PQ


1.

2.

1-6.4

1-6.4


3.

(a) PQQP

(b) PPP

(c)(PQ)(PQ)PQ

(d) (PP)(QQ)PQ


Sn(n1)SS


{}{}

{,,}

p pq

(pp) ( pq)

pp (1) (pq)

pq

(pp)(qq)(1) (3)

pq

( pq)

( pq)

(pq)(pq) (1)(2)

1(3){}{}


  • 16





  • PQ

  • PQTPQTF

    PQP Q

    PQP QTPTQFP QF

    PQPQPQTFT

    PQPQPQFTF


291~5


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