VACUOUSLY - definition. What is VACUOUSLY
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STATEMENT THAT CAN BE EXPRESSED IN THE FORM OF A CONDITIONAL STATEMENT WITH A FALSE ANTECEDENT
Vacuously true; Vacuously; Trivially true; Vacuous implication; Vacuously satisfied; Vacuous; Holds vacuously; Vacuous statement

vacuous         
['vakj??s]
¦ adjective
1. showing a lack of thought or intelligence.
2. archaic empty.
Derivatives
vacuity v?'kju:?ti noun
vacuously adverb
vacuousness noun
Origin
C17: from L. vacuus 'empty' + -ous.
vacuous         
If you describe a person or their comments as vacuous, you are critical of them because they lack intelligent thought or ideas.
Male models are not always so vacuous as they are made out to be.
ADJ [disapproval]
Vacuous         
·adj Empty; unfilled; void; vacant.

ويكيبيديا

Vacuous truth

In mathematics and logic, a vacuous truth is a conditional or universal statement (a universal statement that can be converted to a conditional statement) that is true because the antecedent cannot be satisfied. It is sometimes said that a statement is vacuously true because it does not really say anything. For example, the statement "all cell phones in the room are turned off" will be true when no cell phones are in the room. In this case, the statement "all cell phones in the room are turned on" would also be vacuously true, as would the conjunction of the two: "all cell phones in the room are turned on and turned off", which would otherwise be incoherent and false.

More formally, a relatively well-defined usage refers to a conditional statement (or a universal conditional statement) with a false antecedent. One example of such a statement is "if Tokyo is in France, then the Eiffel Tower is in Bolivia".

Such statements are considered vacuous truths, because the fact that the antecedent is false prevents using the statement to infer anything about the truth value of the consequent. In essence, a conditional statement, that is based on the material conditional, is true when the antecedent ("Tokyo is in France" in the example) is false regardless of whether the conclusion or consequent ("the Eiffel Tower is in Bolivia" in the example) is true or false because the material conditional is defined in that way.

Examples common to everyday speech include conditional phrases used as idioms of improbability like "when hell freezes over..." and "when pigs can fly...", indicating that not before the given (impossible) condition is met will the speaker accept some respective (typically false or absurd) proposition.

In pure mathematics, vacuously true statements are not generally of interest by themselves, but they frequently arise as the base case of proofs by mathematical induction. This notion has relevance in pure mathematics, as well as in any other field that uses classical logic.

Outside of mathematics, statements which can be characterized informally as vacuously true can be misleading. Such statements make reasonable assertions about qualified objects which do not actually exist. For example, a child might truthfully tell their parent "I ate every vegetable on my plate", when there were no vegetables on the child's plate to begin with. In this case, the parent can believe that the child has actually eaten some vegetables, even though that is not true. In addition, a vacuous truth is often used colloquially with absurd statements, either to confidently assert something (e.g. "the dog was red, or I'm a monkey's uncle" to strongly claim that the dog was red), or to express doubt, sarcasm, disbelief, incredulity or indignation (e.g. "yes, and I'm the King of England" to disagree a previously made statement).

أمثلة من مجموعة نصية لـ٪ 1
1. His talent is at vacuously projecting the argot of the age, Hey, guys, weve a deal, Ive got conviction, trust me.
2. It makes us vacuously accepting of lies and half–truths, and parlously slow to demand explanations when we find we have swallowed a fib.
3. The Queen deserves better, surely, than to be vacuously flattered by a painting with all the emotional and intellectual insight of – well, of Rolf on Art.
4. They are widely perceived as slightly superior restaurant maitre d‘s, vacuously meeting and greeting each other, perceiving international exchange as a good in its own right, heedless of any ultimate objective.