• S-matrix theory was a proposal for replacing local quantum field theory as the basic principle of elementary particle physics. It avoided the notion of...
    7 KB (909 words) - 02:46, 18 April 2023
  • mechanics, scattering theory and quantum field theory (QFT). More formally, in the context of QFT, the S-matrix is defined as the unitary matrix connecting sets...
    50 KB (9,202 words) - 06:50, 25 September 2024
  • physics, cosmology, and pure mathematics. String theory represents an outgrowth of S-matrix theory, a research program begun by Werner Heisenberg in...
    34 KB (4,199 words) - 23:57, 22 May 2024
  • In theoretical physics, the matrix theory is a quantum mechanical model proposed in 1997 by Tom Banks, Willy Fischler, Stephen Shenker, and Leonard Susskind;...
    5 KB (667 words) - 11:51, 1 September 2024
  • In graph theory and computer science, an adjacency matrix is a square matrix used to represent a finite graph. The elements of the matrix indicate whether...
    20 KB (2,459 words) - 14:10, 4 October 2024
  • Thumbnail for Matrix (mathematics)
    matrices with the same number of rows and columns, play a major role in matrix theory. Square matrices of a given dimension form a noncommutative ring, which...
    108 KB (13,450 words) - 23:25, 25 October 2024
  • trajectories and scatter self-consistently. This was called S-matrix theory. The most successful S-matrix approach centered on the narrow-resonance approximation...
    13 KB (1,916 words) - 21:54, 31 August 2024
  • In probability theory and mathematical physics, a random matrix is a matrix-valued random variable—that is, a matrix in which some or all of its entries...
    49 KB (7,081 words) - 12:21, 14 June 2024
  • Any P-matrix is a Q-matrix. Conversely, if a matrix is a Z-matrix and a Q-matrix, then it is also a P-matrix. P-matrix Z-matrix Karamardian, S. (1976)...
    3 KB (274 words) - 18:41, 12 August 2023
  • of graph theory, the Laplacian matrix, also called the graph Laplacian, admittance matrix, Kirchhoff matrix or discrete Laplacian, is a matrix representation...
    45 KB (5,041 words) - 21:18, 27 October 2024