Mathematics and Science
- Converging lens or positive lens, in optics
- Plus sign, the sign "+" used to indicate a positive number
- Positive (electricity), a polarity of electrical charge
- Positive element of a C*-algebra (such as a bounded linear operator) whose spectrum consists of positive real numbers
- Positive formula, a logical formula not containing negation
- Positive number, a number that is greater than 0
- Positive (photography), a positive image, in which the color and luminance correlates directly with that in the depicted scene
- Positive result, a result that has been found significant in statistical hypothesis testing
- Positive sense, said of an RNA sequence that codes for a protein
- Positive test, a diagnostic test result that indicates some parameter being evaluated was present
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Famous quotes containing the words mathematics and/or science:
“The three main medieval points of view regarding universals are designated by historians as realism, conceptualism, and nominalism. Essentially these same three doctrines reappear in twentieth-century surveys of the philosophy of mathematics under the new names logicism, intuitionism, and formalism.”
—Willard Van Orman Quine (b. 1908)
“Our science has become terrible, our research dangerous, our findings deadly. We physicists have to make peace with reality. Reality is not as strong as we are. We will ruin reality.”
—Friedrich Dürrenmatt (1921–1990)
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