There are many kinds of statement that are not theorems: A statement can be an axiom, that is, something that is assumed to be true without proof. It is usually self-evident, but like Euclid's parallel postulate, need not be. A statement need not be true in all circumstances - for example, A*B = B*A (commutativity) is not necessarily true for matrix multiplication. A statement can be false. A statement can be self-contradictory for example, "This statement is false".
Something like "Write a false statement".
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It is a question that is definitely true or definitely false. It can't be both.
Yes, a statement can be true or false but without knowing what the statement is no-one can possibly say whether it is true or it is false.
The below statement is false. The above statement is true. I am lying. I am lying when I say I am lying.
Statements that are self contradictory are paradoxes or oxymorons. Some are trivial some are funny. A funny one would be military intelligence or military music. A more serious one is the old one about an immovable object and an irresistible force
Statements that are self contradictory are paradoxes or oxymorons. Some are trivial some are funny. A funny one would be military intelligence or military music. A more serious one is the old one about an immovable object and an irresistible force
There are many kinds of statement that are not theorems: A statement can be an axiom, that is, something that is assumed to be true without proof. It is usually self-evident, but like Euclid's parallel postulate, need not be. A statement need not be true in all circumstances - for example, A*B = B*A (commutativity) is not necessarily true for matrix multiplication. A statement can be false. A statement can be self-contradictory for example, "This statement is false".
One classic example of a paradox is the "liar paradox," which revolves around a statement that cannot consistently be true or false. An example would be the statement "This statement is false." If the statement is true, then it must be false, but if it is false, then it must be true, creating a paradoxical situation.
A contradictory proposition is a proposition that contains a contradiction and therefore is false.
Self-contradictory statements are called paradoxes. They are seemingly true, but lead to a logical inconsistency or contradiction when examined closely. Some famous examples include "This statement is false" and "I always lie."
A paradox is a statement or situation that seems contradictory or illogical, yet may reveal an underlying truth or insight. Paradoxes often challenge our understanding or assumptions, prompting deeper reflection. They can be found in various fields, including philosophy, mathematics, and literature, highlighting complexities in concepts like truth, reality, and morality. A classic example is the statement "This statement is false," which creates a logical inconsistency.
"This sentence is a lie" The time-traveling grandma-killer. Suppose you build a time machine, go back in time to find your grandmother when she was three years old, and then drown her in the bathtub. So she never grows up, and never has any kids. Therefore, one of your parents was never born. Therefore, YOU were never born. Therefore, you never traveled back in time and killed your infant grandma. So she DID grow up and have kids. Therefore, your parent WAS born. Therefore, YOU were born! Therefore, you traveled back in time and killed your infant grandma. Ad infinitum. - Paradox - "A statement that seems contradictory or absurd but, is actually valid or true." For example: "I know that I know nothing." Knowing "know nothing" is knowing something thus cannot be "know nothing". This logic is self-contradictory, but one can know that they know nothing.
Something like "Write a false statement".
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The statement "less is more" is a paradox because it combines two contradictory ideas. The grandfather paradox is a hypothetical situation where someone could potentially travel back in time and prevent their own existence, creating a paradox because their existence would be both necessary and impossible at the same time. The liar paradox is a statement such as "this statement is false," which creates a contradiction when considering its truth value.