indirect proof

The true reason why indirect proofs are employed in different sciences is this.

Such black holes have never been directly observed, but many indirect proofs exist.

There are a number of direct and indirect proofs of water's presence on or under the surface.

The phrase describes a kind of indirect proof.

This approach, using the method of indirect proof, conceals a number of logical points.

The phrase describes a kind of indirect proof, but the reasoning is flawed because it distorts issues.

It is unknown whether an indirect proof of the outcome of a perfectly played game exists.

For our example, this can be done by an indirect proof: One proves that a language of star height 0 contains only finitely many words.

Revealed truths, which rested on indirect proofs from reports in Scripture and tradition, were less certain than things known directly by reason.

This is indirect proof of the competition between different groups, striving to build the most impressive set of latte stones.

This can be proved in a number of ways, including using the law of cosines, vectors, an indirect proof, and complex numbers.

This kind of indirect proof is called proof by contraposition, being the contrapositive to.

For now, he said, it is "indirect proof of the use of anabolic steroids and an additional tool in the fight against doping."

Another Frenchman, Fermat, made ample use of a related principle, indirect proof by infinite descent.

The opposite of a direct proof is an indirect proof (also called a proof by contradiction.)

The many obvious favours received in answer to one's prayers are an indirect proof that the apparitions and revelations are genuine.

There is indirect proof that this version of events is true, Dr. Kelsoe said.

His theory about conversion of fats into carbohydrates remained unproven, despite his provision of several indirect proofs.

The characteristic sickle-gloss shows that they have been used to cut the silica-rich stems of cereals and form an indirect proof for incipient agriculture.

(Indirect proof via the inverse power series technique was given by Newton and Leibniz between 1670 and 1680.)

It is generally considered that the detection of such a signal would be the strongest indirect proof of WIMP dark matter.

Since these early proofs were all non-constructive indirect proofs, they ran contrary to Brouwer's intuitionist ideals.

For this view three direct and three indirect proofs are offered by Saadia, the latter consisting in demonstrating that dualism is absurd.

Another frequently adopted method of indirect proof is that of reductio ad absurdum or proof by contradiction.

They supplement the uncontradicted experience of the relation between two facts by tarka or indirect proof and by "samanylakshana"