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Index Entry
As we have partially noted elsewhere (secs 536 and 604) Euler’s three primitive topological characteristics of vertexes, faces, and lines are structurally identifiable as joints, windows, and push-pull struts respectively. When you cannot see through the windows (faces) it is because the window consists of vast numbers of subvisible windows, each subvisible-magnitude window being strut-mullion-framed by a complex of substructural systems, each with its own primitive topological and structural components
