Equation 24 · The Bend an Elevator Cannot Fake
What does this equation mean?
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This equation states an equality: the expressions on both sides have the same value under the article’s assumptions. Read the equation part by part below; each part has a contextual explanation and a link to its mathematical background.
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Symbol y
y is part of the quantity the equation computes from the expression on the right.
Symbol B
B is one of the signed contributions combined to compute the quantity on the left.
Symbol phi
phi is one of the signed contributions combined to compute the quantity on the left.
Symbol n
n is one of the signed contributions combined to compute the quantity on the left.
=
The expressions on both sides represent the same quantity under the stated assumptions.
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What the article says around this equation
At weak field this reduces to the familiar ( - )/ for Newtonian potential , exactly the quantity real fibre-linked clock comparisons already report [ 1 , 7 ] . Collect every measured edge into a vector y , one entry per link, and encode the network’s topology in an incidence matrix B : row e = (i,j) has a +1 in column i , a -1 in column j , and zero elsewhere. The model is y = B + n for measurement noise n with covariance C , and the standard weighted least-squares estimate of the node potentials is
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