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15 include "ground/notation/functions/element_e_0.ma".
16 include "ground/notation/functions/black_halfcircleright_3.ma".
17 include "ground/arith/nat.ma".
19 (* FINITE RELOCATION MAPS WITH PAIRS ****************************************)
22 inductive fr2_map: Type[0] :=
26 | fr2_lcons: nat → nat → fr2_map → fr2_map
30 "empty (finite relocation maps with pairs)"
31 'ElementE = (fr2_empty).
34 "left cons (finite relocation maps with pairs)"
35 'BlackHalfCircleRight d h f = (fr2_lcons d h f).