A theory(in science) is something that that has been confirmed by a great ammount of evidence. Theorys explain the facts.
(Hypothosis is an idea based on the observed evidence. Theory is a tested, confirmed hypothosis)
Fact: the sun is bright and hot
theory: nuclear fusion
im sure some one can asnwer this much better that I did.
But you asked if a theory is something "that you can prove to be"?
not as an absolute fact, that's only in mathematics. But based on all known evidence it is what is most likely to be true.
evidence has to do with the natural world. Proof is a different thing.
You create a theory. Prove the theory to be true by testing it. If it works, it is true. If it does not work, it is not true.
An idea that explains something could be called a theory. Good scientific theories are falsifiable which means you could prove it to be false. You can never prove a theory to be true, you can only provide evidence that supports the theory.
Then they could accept the theory or continue to conduct experiments to build support for or against the theory.
By performing experiments whose goal is to prove that such theory is a mistaken theory.
prove the intersction for crisp set theory
If they are mathematicians they can prove a theorem. In the physical sciences theories cannot be proved. The current theory is the one that fits the experimental evidence more closely than all alternative theories. When a new theory comes along that is more accurate, the old theory is superseded.
Newton explained his theory
yes it can prove ....
Einstein didn't prove the theory of relativity. It is a theory, a possible explanation, it is generally accepted because it explains a lot of things but that doesn't "prove" the theory, at least not to physicists. See related questions for the country of discovery.
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Unfortunately, there is no evidence of someone called "Keaghan" (or something similar) who proposed a prime number theory. I suggest you check your spelling and resubmit the question.
Because the whole of a theory is that it cannot be proven...