bivariational en · ADJ
Etymology
From bi- + variational.
Meanings
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(not-comparable) Pertaining to interactions between functionals.
For the latter case, the bivariational Lagrangian formulation becomes more than a convenient mathematical tool, since it facilitates a faster convergent perturbation series than the simpler energy expansion..
2015, Kasper Kristensen, Janus Juul Eriksen, Devin A. Matthews, Jeppe Olsen, Poul Jørgensen, “A view on coupled cluster perturbation theory using a bivariational Lagrangian formulation”, in arXiv: