In mathematics, a form (i.e. a homogeneous polynomial) h(x) of degree 2m in the real n-dimensional vector x is sum of squares of forms (SOS) if and only if there exist forms g 1 ( x ) , … , g k ( x ) {\displaystyle g_{1}(x),\ldots ,g_{k}(x)} of degree m such that h ( x ) = ∑ i = 1 k g i ( x ) 2 .
In mathematics, a form (i.e. a homogeneous polynomial) h(x) of degree 2m in the real n-dimensional vector x is sum of squares of forms (SOS) if and only if there exist forms g 1 ( x ) , … , g k ( x ) {\displaystyle g_{1}(x),\ldots ,g_{k}(x)} of degree m such that h ( x ) = ∑ i = 1 k g i ( x ) 2 .
Source: Wikipedia "Polynomial SOS" · CC BY-SA 4.0
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