E Writ Backward

§2: Further steps in symbolization: the existential quantifier 155 and ‘y’ is bound by the quantifier; in every case, for occurrences of a variable v to be bound by a quantifier, there must be an occurrence of v immediately to the right of the quantifier. • Expressions with free variables cannot be true or false. For instance, ‘x is wise’ or ‘Wx’ cannot be true or false, since ‘x’ does not stand for any particular person or thing. So individual variables are different from individual constants. When we need a word for both, we use ‘term’: both individual variables and individual constants are terms. An expression with free individual variables is called an open sentence, and is said to be atomic if it contains no connectives or quantifiers (‘Wx’ is atomic). A closed sentence, or a sentence, in short, contains no free variables. So it is only closed sentences which can be true or false. In this book, ‘sentence’ usually means ‘closed sentence’; for a word to include both open and closed sen • Since ‘E’ is ‘E’ writ backward, it may be pronounced by pronouncing ‘E’ backward. important to master this terminology, since proper discussion of predicate is impossible without it. ke atomic sentences, existentially quantified sentences can be combined s impossible without it.

На странице учебника по логике голубой рамкой выделено абсурдное замечание о том, что букву «E» можно произносить задом наперёд, поскольку она сама якобы написана задом наперёд. Мем используют как реакцию на бессмысленное, тавтологичное или чрезмерно заумное объяснение. EN: A logic textbook page has an absurd sentence highlighted in blue: the letter “E” can supposedly be pronounced backward because it is written backward. The meme is used as a reaction to meaningless, tautological, or needlessly overcomplicated explanations.

• @ithueti / 14047 2024-09-19