**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, mathematics and/or science:

“I must study politics and war that my sons may have liberty to study *mathematics and* philosophy.”

—John Adams (1735–1826)

“It is a monstrous thing to force a child to learn Latin or Greek or *mathematics* on the ground that they are an indispensable gymnastic for the mental powers. It would be monstrous even if it were true.”

—George Bernard Shaw (1856–1950)

“The present war having so long cut off all communication with Great-Britain, we are not able to make a fair estimate of the state of *science* in that country. The spirit in which she wages war is the only sample before our eyes, and that does not seem the legitimate offspring either of *science* or of civilization.”

—Thomas Jefferson (1743–1826)