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  2. Penrose graphical notation - Wikipedia

    en.wikipedia.org/wiki/Penrose_graphical_notation

    Penrose graphical notation (tensor diagram notation) of a matrix product state of five particles. In mathematics and physics, Penrose graphical notation or tensor diagram notation is a (usually handwritten) visual depiction of multilinear functions or tensors proposed by Roger Penrose in 1971. [1]

  3. String diagram - Wikipedia

    en.wikipedia.org/wiki/String_diagram

    When interpreted in the monoidal category of vector spaces and linear maps with the tensor product, string diagrams are called tensor networks or Penrose graphical notation. This has led to the development of categorical quantum mechanics where the axioms of quantum theory are expressed in the language of monoidal categories.

  4. Penrose diagram - Wikipedia

    en.wikipedia.org/wiki/Penrose_diagram

    Penrose diagram of an infinite Minkowski universe, horizontal axis u, vertical axis v. In theoretical physics, a Penrose diagram (named after mathematical physicist Roger Penrose) is a two-dimensional diagram capturing the causal relations between different points in spacetime through a conformal treatment of infinity.

  5. Matrix product state - Wikipedia

    en.wikipedia.org/wiki/Matrix_product_state

    For periodic boundary conditions,Penrose graphical notation (tensor diagram notation) of a matrix product state of five particles. A matrix product state (MPS) is a representation of a quantum many-body state.

  6. Tensor network - Wikipedia

    en.wikipedia.org/wiki/Tensor_network

    Foundational research on tensor networks began in 1971 with a paper by Roger Penrose. [9] In “Applications of negative dimensional tensors” Penrose developed tensor diagram notation, describing how the diagrammatic language of tensor networks could be used in applications in physics.

  7. Spin network - Wikipedia

    en.wikipedia.org/wiki/Spin_network

    Spin network diagram, after Penrose. In physics, a spin network is a type of diagram which can be used to represent states and interactions between particles and fields in quantum mechanics. From a mathematical perspective, the diagrams are a concise way to represent multilinear functions and functions between representations of matrix groups ...

  8. File:Penrose riemann curvature tensor.svg - Wikipedia

    en.wikipedia.org/wiki/File:Penrose_riemann...

    Download QR code; In other projects ... Penrose notation for the riemann curvature tensor. Date: 17 August 2008, 15:24 ... 1=Penrose notation for the riemann ...

  9. File:Matrix product state obc tikz.svg - Wikipedia

    en.wikipedia.org/wiki/File:Matrix_product_state...

    Date/Time Thumbnail Dimensions User Comment; current: 16:36, 22 April 2014: 190 × 65 (19 KB): Pmigdal (talk | contribs): Matrix product state with open boundary condition, in tensor diagram notation (i.e. Penrose graphical notation).