publication venue for The evolution equation: An application of groupoids to material evolution. 14:331-348. 2022 Schwinger's picture of quantum mechanics: 2-groupoids and symmetries. 13:333-354. 2021 Covariant Hamiltonian field theories on manifolds with boundary: Yang-Mills theories. 9:47-82. 2017 Invariant forms and automorphisms of locally homogeneous multisymplectic manifolds. 4:397-419. 2012 Kinematic reduction and the hamilton-jacobi equation. 4:207-237. 2012 Hopf-Lax Formula for Variational Problems with Non-Constant Discount. 1:357-367. 2009