File:Concertina cube graph; tensor descriptions.svg

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Summary[edit]

Implications between statements in predicate logic like ,
represented by abbreviated descriptions of cubic matrices like the following:

These are called 3-lines in 2-3-planes
matrix abbreviated
description
description example formula
123ne The 1-2-3-matrix is nonempty.
∀23ne All 2-3-planes are nonempty.
in∃23 ∀3ne In a 2-3-plane all 3-lines are nonempty.
∃3f A 3-line is full.
∀3ne All 3-lines are nonempty.
in∀23 ∃3f In all 2-3-planes a 3-line is full.
∃23f A 2-3-plane is full.
123f The 1-2-3-matrix is full.
matrices
abbreviations
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Date/TimeThumbnailDimensionsUserComment
current15:00, 29 June 2013Thumbnail for version as of 15:00, 29 June 2013673 × 651 (126 KB)Watchduck (talk | contribs)reflect
19:19, 16 December 2010Thumbnail for version as of 19:19, 16 December 2010673 × 651 (168 KB)Watchduck (talk | contribs){{Information |Description=Implications between statements in predicate logic, like <math>\forall x \forall y \forall z Rxyz</math> {{inkscape}} |Source={{own}} |Date= |Author=Lipedia |Permission= |other_versions

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