Propositions

What is a proposition?

• An invariable word used to establish a dependency relationship between two or more words.

• It is a statement with complete meaning and constitutes the most elementary form of logic.

• It is a resinous mixture obtained by bees from tree buds.

• None of the above.

Is a proposition and a statement the same thing?

• Yes

• Not

The following words are types of prepositions:

• Universal / particular

• Negative / Positive.

• Simple / Compound

• All of the above

there are universal propositions, in which a state is generalized for every element that fulfills a characteristic, and particular propositions when the subject is taken from its particular extension. According to said:

• Plato

• Socrates

• Aristotle

• R. Descartes

5. Negative/positive. They are those propositions that:

• Express a state of affairs (the positive ones) or the very absence of that state (the negative ones).

• Express a state of affairs (the negative ones) or the very absence of that state (the positive ones).

An example of a simple proposition is:

• Cat

• Her cat is brown

• Is brown

• Her cat

Compound propositions appear mediated by the presence of some kind of connector, which can be opposition (or), addition (and), or condition (if). In addition, negative propositions, which include the word no, are considered compounds.

• True

• False

What is entailment?

• Joining two or more words together just because.

• A word that is used to join two or more parts of a sentence or two or more sentences together

• It is the principle that, under certain conditions, the truth of one statement guarantees the truth of a second statement.

What are the steps to correctly perform an entailment test is it necessary to follow some specific steps?

• Choose a proposition. Find the second proposition using entailment. Make the second proposition negative. The result between first and second proposition.

• Choose a proposition. Find the second proposition using entailment. The result between the first and second proposition. Make a third proposition from the first two propositions.

An important contributor to find or deduct the entailment is the ‘key word’ in the statement

• True

• False