Opening sentence (Open Sentence)
opening sentence is a sentence or a sentence of variables. A proposition The variable displacement with a relative in the universe, then Proposition
opening sentence. For example : 1. He is a swimmer Thailand national team, he was a footballer Thailand. If instead the name of the national soccer team to Thailand this sentence is true. If instead with something other than a footballer Thailand. This sentence is false 2. x - 6 = 10 Y + 5 = 8, if the value of Y with three sentences would have to be true if the value of Y with other numbers. This statement will be issued a false sentence than the opening sentence as 1. 10 is the answer to the equation x - 1 = 7 2. Earth rotates around its own 3. What is the equation 2x + 1 = x 8 4. Please sit quietly 5. No smoking.
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