In mathematics and control theory, H2, or H-square is a Hardy space with square norm. It is a subspace of L2 space, and is thus a Hilbert space. In particular...

completing the square is a technique for converting a quadratic polynomial of the form a x 2 + b x + c {\displaystyle ax^{2}+bx+c} to the form a ( x − h ) 2 +...

Hollywood Squares (originally The Hollywood Squares) is an American game show in which two contestants compete in a game of tic-tac-toe to win cash and...

alternated square, h{4}, is a digon, {2}. The square is the n = 2 case of the families of n-hypercubes and n-orthoplexes. The perimeter of a square whose four...

Squaring the square is the problem of tiling an integral square using only other integral squares. (An integral square is a square whose sides have integer...

inequalities and requires fewer assumptions. Blaschke product Hardy space H square H-infinity loop-shaping Linear-quadratic-Gaussian control (LQG) Rosenbrock...

historical and recreational mathematics, a square array of numbers, usually positive integers, is called a magic square if the sums of the numbers in each row...

mathematics, a square root of a number x is a number y such that y 2 = x {\displaystyle y^{2}=x} ; in other words, a number y whose square (the result of...

(ћ), or the astronomical symbol of Saturn (♄). A white uppercase Ħ on a red square was the logo of Heritage Malta until 2022. It is used as the symbol...

square pyramid is a pyramid with a square base, having a total of five faces. If the apex of the pyramid is directly above the center of the square,...