Hi, I am learning the way gmsh assembles the linear system in elasticitySolver. May I ask what is the formulation of the Lagrangian multiplier team? What do d, _tau, and _f stand for in the input file? Thanks, Bin -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://www.geuz.org/pipermail/gmsh/attachments/20141231/f434e63a/attachment.html>