the opening sentence is affirmative sentences or sentences with variables not proposition and when แทนที่ตัวแปร
with members in relative universe and proposition
.The definition of the opening sentence is a statement, which consists of one or more variables without a proposition, but will be a proposition. When instead of variable universe as the member relative
.That is, when instead of variables and then will be able to tell you the truth value
opening sentences, such as
1. He is a swimmer team
2. X - 6 = 10
3. Y < - 6
sentence is not the opening sentence. Such as
1. 10 is a solution of the equation x - 1 = 7
2. The world spins
3.Seek the X equation 2x 1 = 8
4. Please sit quietly 5
. No smoking agreement 1. Instead, popular proposition with p q r s,,,...
2. Popular instead of opening sentence. P (x), Q (x),..., P (x y), Q, (x y),... P (x), Q (x),... Instead, the opening sentence with X variable
by P, (x y), Q (x, the Y),...Instead, the opening sentence with x y and variable
3. Truth values as "real" is represented by "T"
4. The truth is "false". Be represented by. "F", for example,
-
. He is a good man. ⇒ is the opening sentence that contains variables. "He"
.Education x > 3 ⇒ is the opening sentence that contains variables. "X"
.
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