Search Results for ""

Two real algebraic manifolds are equivalent iff they are analytically homeomorphic (Nash 1952).

A projective correlation of period two. In a polarity, a is called the polar of A, and A the inversion pole a.

A line segment where two faces of a polyhedron meet, also called a side.

An automorphism which interchanges the two vertices of a regular map at each edge without interchanging the vertices.

The exploration of three-dimensional space from two-dimensional sections of projections of solid bodies.

The Stolarsky mean of two numbers a and c is defined by S_p(a,c)=[(a^p-c^p)/(p(a-c))]^(1/(p-1)) (Havil 2003, p. 121).

The sum of the angles of a triangle is two right angles. This postulate is equivalent to the parallel postulate.

Let A be a C^*-algebra, then two element a,b of A are called unitarily equivalent if there exists a unitary u in A such that b=uau^*.

If two curves of the same curve genus >1 are in rational correspondence, then that correspondence is birational.

The concatenation of two strings a and b is the string ab formed by joining a and b. Thus the concatenation of the strings "book" and "case" is the string "bookcase". The ...