The physical 3d $\mathcal N = 2$ theory $T\[Y]$ was previously used to predict the existence of some $3$-manifold invariants $\widehat{Z}{a}(q)$ that take form power series with integer coefficients, converging in unit disk. Their radial limits at roots unity should recover Witten–Reshetikhin–Turaev invariants. In this paper we discuss how, for complements knots $S^3$, analogue be a two-variabl...

data envelopment analysis (dea) is a non-parametric approach for performance analysis of decision making units (dmus) which uses a set of inputs to produce a set of outputs without the need to consider internal operations of each unit. in recent years, there have been various studies dealt with two-stage production systems, i.e. systems which consume some inputs in their first stage to produce ...

The trust-region subproblem minimizes a general quadratic function over an ellipsoid and can be solved in polynomial time using a semidefinite-programming (SDP) relaxation. Intersecting the feasible set with a second ellipsoid results in the two-trust-region subproblem (TTRS). Even though TTRS can also be solved in polynomial-time, existing algorithms do not use SDP. In this paper, we investiga...