Provably difficult
The set or property of problems for which it can be proven that no polynomial-time algorithm exists, only exponential-time algorithms.
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- Provably unsolvable
The set or property of problems for which no algorithm at all exists. E.g. the Halting Problem. See also provably difficult.
- Pro-vaccine
noun 1. any preparation used as a preventive inoculation to confer immunity against a specific disease, usually employing an innocuous form of the disease agent, as killed or weakened bacteria or viruses, to stimulate antibody production. 2. the virus of cowpox, used in vaccination, obtained from pox vesicles of a cow or person. 3. a […]
- Provascular-tissue
[proh-vas-kyuh-ler] /proʊˈvæs kyə lər/ noun, Botany. 1. procambium.
- Prove
verb (used with object), proved, proved or proven, proving. 1. to establish the truth or genuineness of, as by evidence or argument: to prove one’s claim. 2. Law. to establish the authenticity or validity of (a will); probate. 3. to give demonstration of by action. 4. to subject to a test, experiment, comparison, analysis, or […]
- Proved
verb (used with object), proved, proved or proven, proving. 1. to establish the truth or genuineness of, as by evidence or argument: to prove one’s claim. 2. Law. to establish the authenticity or validity of (a will); probate. 3. to give demonstration of by action. 4. to subject to a test, experiment, comparison, analysis, or […]