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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.
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]
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 ...
Günter Hotz gave the first mathematical definition of string diagrams in order to formalise electronic circuits. [1] However, the invention of string diagrams is usually credited to Roger Penrose, [2] with Feynman diagrams also described as a precursor. [3]
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Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS.It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA).
The Penrose diagram showing the possible degenerations of the Petrov type of the Weyl tensor. Type I: four simple principal null directions, Type II: one double and two simple principal null directions, Type D: two double principal null directions, Type III: one triple and one simple principal null direction,
In his book "Cycles of Time", Penrose indicates that one can take the full Penrose diagram, cut it in half along the Vertical line connecting the Positive Distant Future with the 'Negative' Distant Past (though the diagrams seem to assume that BOTH the distant future AND the distant past are infinitely far away, and I am not certain whether ...