law csum_row0

minebender-game@1.0.0.0 · proof_sums.bend:107

import Base
import minebender-game@1.0.0.0/types.bend as T
import minebender-game@1.0.0.0/board.bend as B

107law csum_row0:
108  for ~A: Data
109  for ~f: A -> Nat
110  for +d: A
111  for +r: List<&2, A>
112  for +rt: T.Grid(A)
113  for +xs: List<&2, Nat>
114  {csum(~A, ~f, d, r <> rt, B.row_cells(0n, xs)) == rsum_at(~A, ~f, d, r, xs) : Nat}