Operations with tgrid objects
Usage
# S4 method for class 'tgrid'
c(x, ..., recursive = FALSE)
# S4 method for class 'tgrids'
c(x, ..., recursive = FALSE)
# S4 method for class 'tgrid,numeric'
e1 + e2
# S4 method for class 'tgrid,numeric'
e1 * e2
# S4 method for class 'tgrids,numeric'
e1 + e2
# S4 method for class 'tgrids,numeric'
e1 * e2