What is McCallum rule?

The shift rule is a mathematical rule for sequences and series. Here n {\displaystyle...

In calculus, the reciprocal rule gives the derivative of the reciprocal of a function f in terms of the derivative of f. The reciprocal rule can be used to show that...

The Varian Rule holds that "A simple way to forecast the future is to look at what rich people have today; middle-income people will have something equivalent in 10 years,...

The Repeal of the Disclosure of Payments by Resource Extraction Issuers Rule , H.J.Res. 41] is an Act of Congress that nullifies the Securities and Exchange Commission regulation known as the...

In two-dimensional computer graphics, the non-zero winding rule is a means of determining whether a given point falls within an enclosed curve. Unlike the similar even-odd rule, it relies on...

The no-impeachment rule is a part of U.S. evidence law that generally prohibits jurors from testifying about their deliberations in an attempt to discredit a verdict. Arising in British common...

The Waiter Rule refers to a common belief that one's true character can be gleaned from how one treats staff or service workers, such as a "waiter". The rule was...

RULE is a project that aims to use up-to-date Linux software on old PCs , by recompiling and changing some code to recent programs in order to make them use...

The most basic rule of heraldic design is the rule of tincture: metal should not be put on metal, nor colour on colour. This means that the heraldic metals or...

Rule G is a prohibition against railroad employees working while intoxicated. It was originally a near-universal provision of individual railroads' operating rules, and is now part of the universal code...