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A morphism f:Y->X in a category is a monomorphism if, for any two morphisms u,v:Z->Y, fu=fv implies that u=v. In the categories of sets, groups, modules, etc., a monomorphism ...

Always decreasing; never remaining constant or increasing. Also called strictly decreasing.

Morley's circle is the circumcircle of the first Morley triangle. Its center is the first Morley center, which has center function alpha_(356)=cos(1/3A)+2cos(1/3B)cos(1/3C), ...

Possessing more than one mode. A set of values having a single unique mode is said to be unimodal, one with two modes is called bimodal, and one with three modes is called ...

The integral transform defined by (Kphi)(x)=int_0^inftyG_(pq)^(mn)(xt|(a_p); (b_q))phi(t)dt, where G_(pq)^(mn) is a Meijer G-function. Note the lower limit of 0, not -infty ...

An algebra, also called a nilalgebra, consisting only of nilpotent Elements.

Any irreducible curve may be carried by a factorable Cremona transformation into one with none but ordinary singular points.

Let A be a C^*-algebra, then an element a in A is called normal if aa^*=a^*a.

The study of numbers for the supposed purpose of predicting future events or seeking connections with the occult.

A map is called "one-to-one" (or "1:1") if it is injective. However, being in "one-to-one correspondence" is synonymous with being a bijection. Unfortunately, this confusing ...