Stress Degeneracy, Collinearity Flags, and Three-Dimensional Body–Pin Rigidity
Resolving a conjecture open for nearly two decades: stress degeneracy and collinearity flags yield the Euclidean three-dimensional body–pin partition criterion.
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The Bland–Jensen Conjecture Through Quotient Geometry
The 1987 conjecture, resolved nearly four decades later through nine parity equations, Rado’s theorem, and quotient geometry of fixed dimension.