• In physics, the S-matrix or scattering matrix is a matrix that relates the initial state and the final state of a physical system undergoing a scattering...
    50 KB (9,215 words) - 22:43, 28 May 2025
  • replacing it with abstract mathematical properties of the S-matrix. In S-matrix theory, the S-matrix relates the infinite past to the infinite future in one...
    7 KB (909 words) - 13:03, 24 May 2025
  • computer science, an adjacency matrix is a square matrix used to represent a finite graph. The elements of the matrix indicate whether pairs of vertices...
    20 KB (2,453 words) - 03:31, 18 May 2025
  • Thumbnail for Block matrix
    In mathematics, a block matrix or a partitioned matrix is a matrix that is interpreted as having been broken into sections called blocks or submatrices...
    31 KB (5,122 words) - 03:49, 2 June 2025
  • invertible matrix (non-singular, non-degenarate or regular) is a square matrix that has an inverse. In other words, if some other matrix is multiplied...
    46 KB (7,049 words) - 17:28, 22 June 2025
  • Thumbnail for Matrix (mathematics)
    In mathematics, a matrix (pl.: matrices) is a rectangular array or table of numbers or other mathematical objects with elements or entries arranged in...
    120 KB (14,598 words) - 15:38, 28 June 2025
  • Thumbnail for Correlation function (quantum field theory)
    theory where they can be used to calculate various observables such as S-matrix elements, although they are not themselves observables. This is because...
    11 KB (1,760 words) - 12:02, 7 June 2025
  • \phi } 's if one uses the S-matrix to swap the two ψ {\displaystyle \psi } 's. Identifying the coefficients of the ϕ {\displaystyle \phi } 's on both...
    17 KB (2,565 words) - 03:11, 13 February 2025
  • outgrowth of S-matrix theory, a research program begun by Werner Heisenberg in 1943 following John Archibald Wheeler's 1937 introduction of the S-matrix. Many...
    34 KB (4,214 words) - 02:54, 11 June 2025
  • Thumbnail for Matrix multiplication
    columns in the first matrix must be equal to the number of rows in the second matrix. The resulting matrix, known as the matrix product, has the number...
    41 KB (6,581 words) - 13:39, 28 February 2025
  • Thumbnail for Covariance matrix
    covariance matrix (also known as auto-covariance matrix, dispersion matrix, variance matrix, or variance–covariance matrix) is a square matrix giving the...
    37 KB (5,799 words) - 21:03, 14 April 2025
  • Scattering parameters or S-parameters (the elements of a scattering matrix or S-matrix) describe the electrical behavior of linear electrical networks...
    45 KB (7,535 words) - 01:21, 9 June 2025
  • The Matrix is an American cyberpunk media franchise consisting of four feature films, beginning with The Matrix (1999) and continuing with three sequels...
    93 KB (7,493 words) - 11:16, 23 June 2025
  • algebra, a matrix decomposition or matrix factorization is a factorization of a matrix into a product of matrices. There are many different matrix decompositions;...
    26 KB (3,580 words) - 22:14, 20 February 2025
  • classical adjoint of a square matrix A, adj(A), is the transpose of its cofactor matrix. It is occasionally known as adjunct matrix, or "adjoint", though that...
    29 KB (4,813 words) - 02:50, 10 May 2025
  • Thumbnail for Feynman diagram
    particles or fields. The transition amplitude is then given as the matrix element of the S-matrix between the initial and final states of the quantum system....
    93 KB (15,967 words) - 09:40, 22 June 2025
  • in the Matrix franchise to be directed solely by Lana. It is the sequel to The Matrix Revolutions (2003) and the fourth installment in The Matrix film series...
    105 KB (9,686 words) - 09:20, 26 June 2025
  • implies the S-matrix is 1, no interaction occur and all states remain unchanged. Unitarity of the S-matrix: SS = 1 {\displaystyle S^{\dagger }S=1} is then...
    8 KB (1,228 words) - 13:01, 1 April 2025
  • In linear algebra, a completely-S matrix is a square matrix such that for every principal submatrix R there exists a positive vector u such that Ru >...
    835 bytes (63 words) - 21:02, 14 April 2025
  • Weisskopf, and others. Related theories are U-matrix, S-matrix, by M-matrix, or T-matrix. The term R-matrix is used in connection with the Yang–Baxter equation...
    9 KB (971 words) - 07:16, 17 June 2025
  • in terms of the S-matrix. Here δ is the Dirac delta function. The computation of the S-matrix is the main goal of the scattering theory...
    36 KB (5,765 words) - 12:42, 17 June 2025
  • property requires the S-matrix to factorize S β α → S β 1 α 1 S β 2 α 2 {\displaystyle S_{\beta \alpha }\rightarrow S_{\beta _{1}\alpha _{1}}S_{\beta _{2}\alpha...
    10 KB (1,309 words) - 04:01, 27 May 2025
  • converting the final Y matrix to an S or Z matrix as needed, and extracting desired measurements from the Y, Z, and/or S matrix. A fifth order, 50 ohm...
    19 KB (2,068 words) - 10:07, 17 June 2025
  • The Matrix Revolutions is a 2003 American science fiction action film written and directed by the Wachowskis. The direct sequel to The Matrix Reloaded...
    38 KB (3,594 words) - 20:49, 25 June 2025
  • Thumbnail for Soft graviton theorem
    first formulated by Steven Weinberg in 1965, allows calculation of the S-matrix, used in calculating the outcome of collisions between particles, when...
    6 KB (845 words) - 17:53, 28 May 2025
  • rotation matrix is a transformation matrix that is used to perform a rotation in Euclidean space. For example, using the convention below, the matrix R = [...
    102 KB (15,800 words) - 15:17, 18 June 2025
  • Thumbnail for Google matrix
    A Google matrix is a particular stochastic matrix that is used by Google's PageRank algorithm. The matrix represents a graph with edges representing links...
    16 KB (1,796 words) - 15:01, 19 February 2025
  • Thumbnail for Quantum electrodynamics
    for the S-matrix: M f i = ( i e ) 2 u ¯ ( p → ′ , s ′ ) ϵ / ′ ( k → ′ , λ ′ ) ∗ p / + k / + m e ( p + k ) 2 − m e 2 ϵ / ( k → , λ ) u ( p → , s ) + ( i...
    50 KB (6,659 words) - 23:56, 15 June 2025
  • or in the related S {\displaystyle S} -matrix. In the case of the Coulomb potential considered above this S {\displaystyle S} -matrix is given by the following...
    13 KB (1,919 words) - 06:29, 23 February 2025
  • fermionic operators.}}\end{cases}}} The S-matrix in quantum field theory is an example of a time-ordered product. The S-matrix, transforming the state at t = −∞...
    6 KB (1,299 words) - 02:44, 7 September 2024