Nothing
`minus` <- function(x){-x}
`rev.clifford` <- function(x){
coeffs(x)[(grades(x)%%4) %in% 2:3] %<>% minus
return(x)
}
`Conj.clifford` <- function(z){
z <- rev(z)
coeffs(z)[gradesminus(z)%%2 != 0] %<>% minus
return(z)
}
`cliffconj` <- function(z){
coeffs(z)[grades(z)%%4 %in% 1:2] %<>% minus
return(z)
}
`neg` <- function(C,n){
coeffs(C)[grades(C) %in% n] %<>% minus
return(C)
}
`gradeinv` <- function(C){
coeffs(C)[grades(C)%%2==1] %<>% minus
return(C)
}
`dual` <- function(C,n){ C*clifford_inverse(pseudoscalar(n)) }
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