Equation 48 · Part 1 · The Bend an Elevator Cannot Fake
Symbol phi
What this part means
phi is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Its job in the formula
phi is a part of this expression. Its role is fixed by the surrounding article and by the operations shown in the formula.
Full expression→Symbol phi→Article meaning
The passage around this formula
…edge and connectivity propagates that equality to every node. By rank–nullity, a connected tree — with exactly |V|-1 edges for |V| nodes — has an incidence matrix of full row rank, meaning that for any data whatsoever a exists reproducing it exactly. A tree, in other words, cannot fail to close, on any data, ever; it carries zero redundant edges and therefore zero capacity to audit itself. Only once a network graph contains at least one independent cycle — one edge beyond a spanning tree — does y have…
Learn the underlying idea
A variable is a named place for a value. Its letter is a local label: x can mean position in one formula and a data point in another.
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