Something that is not true.

(mathematical analysis) The slope of a secant as obtained by dividing the vertical difference between two intersections of the secant and a curve with their horizontal distance. When the horizontal distance approaches zero the slope of the secant approaches the derivative of the curve.

plural of quotient group

plural of quoddy

plural of Quonset hut

The degree to which someone or something reflects fact rather than fiction; the degree to which something reflects reality.

(logic) The principle or axiom of logic stating that if a contradiction or a false proposition is proven to be true, then it proves that everything is true. In symbols: ⊥→P

(topology) A surjective, continuous function from one topological space to another one, such that the latter one's topology has the property that if the inverse image (under the said function) of some subset of it is open in the function's domain, then the subset is open in the target space.

In a quodlibetic manner.

plural of quodlin