:: GOBOARD4 semantic presentation begin theorem :: GOBOARD4:1 (Bool "for" (Set (Var "G")) "being" ($#m2_finseq_1 :::"Go-board":::) (Bool "for" (Set (Var "f1")) "," (Set (Var "f2")) "being" ($#m2_finseq_1 :::"FinSequence":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Num 1) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")))) & (Bool (Num 1) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")))) & (Bool (Set (Var "f1")) ($#r1_goboard1 :::"is_sequence_on"::: ) (Set (Var "G"))) & (Bool (Set (Var "f2")) ($#r1_goboard1 :::"is_sequence_on"::: ) (Set (Var "G"))) & (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k8_matrix_1 :::"Line"::: ) "(" (Set (Var "G")) "," (Num 1) ")" ")" ))) & (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" )) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k8_matrix_1 :::"Line"::: ) "(" (Set (Var "G")) "," (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "G")) ")" ) ")" ")" ))) & (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k9_matrix_1 :::"Col"::: ) "(" (Set (Var "G")) "," (Num 1) ")" ")" ))) & (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" )) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k9_matrix_1 :::"Col"::: ) "(" (Set (Var "G")) "," (Set "(" ($#k1_matrix_1 :::"width"::: ) (Set (Var "G")) ")" ) ")" ")" )))) "holds" (Bool (Set ($#k10_xtuple_0 :::"rng"::: ) (Set (Var "f1"))) ($#r1_xboole_0 :::"meets"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set (Var "f2")))))) ; theorem :: GOBOARD4:2 (Bool "for" (Set (Var "G")) "being" ($#m2_finseq_1 :::"Go-board":::) (Bool "for" (Set (Var "f1")) "," (Set (Var "f2")) "being" ($#m2_finseq_1 :::"FinSequence":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")))) & (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")))) & (Bool (Set (Var "f1")) ($#r1_goboard1 :::"is_sequence_on"::: ) (Set (Var "G"))) & (Bool (Set (Var "f2")) ($#r1_goboard1 :::"is_sequence_on"::: ) (Set (Var "G"))) & (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k8_matrix_1 :::"Line"::: ) "(" (Set (Var "G")) "," (Num 1) ")" ")" ))) & (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" )) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k8_matrix_1 :::"Line"::: ) "(" (Set (Var "G")) "," (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "G")) ")" ) ")" ")" ))) & (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k9_matrix_1 :::"Col"::: ) "(" (Set (Var "G")) "," (Num 1) ")" ")" ))) & (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" )) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k9_matrix_1 :::"Col"::: ) "(" (Set (Var "G")) "," (Set "(" ($#k1_matrix_1 :::"width"::: ) (Set (Var "G")) ")" ) ")" ")" )))) "holds" (Bool (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f1"))) ($#r1_xboole_0 :::"meets"::: ) (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f2")))))) ; theorem :: GOBOARD4:3 (Bool "for" (Set (Var "G")) "being" ($#m2_finseq_1 :::"Go-board":::) (Bool "for" (Set (Var "f1")) "," (Set (Var "f2")) "being" ($#m2_finseq_1 :::"FinSequence":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")))) & (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")))) & (Bool (Set (Var "f1")) ($#r1_goboard1 :::"is_sequence_on"::: ) (Set (Var "G"))) & (Bool (Set (Var "f2")) ($#r1_goboard1 :::"is_sequence_on"::: ) (Set (Var "G"))) & (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k8_matrix_1 :::"Line"::: ) "(" (Set (Var "G")) "," (Num 1) ")" ")" ))) & (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" )) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k8_matrix_1 :::"Line"::: ) "(" (Set (Var "G")) "," (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "G")) ")" ) ")" ")" ))) & (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k9_matrix_1 :::"Col"::: ) "(" (Set (Var "G")) "," (Num 1) ")" ")" ))) & (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" )) ($#r2_hidden :::"in"::: ) (Set ($#k10_xtuple_0 :::"rng"::: ) (Set "(" ($#k9_matrix_1 :::"Col"::: ) "(" (Set (Var "G")) "," (Set "(" ($#k1_matrix_1 :::"width"::: ) (Set (Var "G")) ")" ) ")" ")" )))) "holds" (Bool (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f1"))) ($#r1_xboole_0 :::"meets"::: ) (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f2")))))) ; definitionlet "f" be ($#m1_hidden :::"Relation":::); let "r", "s" be ($#m1_subset_1 :::"Real":::); pred "f" :::"lies_between"::: "r" "," "s" means :: GOBOARD4:def 1 (Bool (Set ($#k10_xtuple_0 :::"rng"::: ) "f") ($#r1_tarski :::"c="::: ) (Set ($#k1_xxreal_1 :::"[."::: ) "r" "," "s" ($#k1_xxreal_1 :::".]"::: ) )); end; :: deftheorem defines :::"lies_between"::: GOBOARD4:def 1 : (Bool "for" (Set (Var "f")) "being" ($#m1_hidden :::"Relation":::) (Bool "for" (Set (Var "r")) "," (Set (Var "s")) "being" ($#m1_subset_1 :::"Real":::) "holds" (Bool "(" (Bool (Set (Var "f")) ($#r1_goboard4 :::"lies_between"::: ) (Set (Var "r")) "," (Set (Var "s"))) "iff" (Bool (Set ($#k10_xtuple_0 :::"rng"::: ) (Set (Var "f"))) ($#r1_tarski :::"c="::: ) (Set ($#k1_xxreal_1 :::"[."::: ) (Set (Var "r")) "," (Set (Var "s")) ($#k1_xxreal_1 :::".]"::: ) )) ")" ))); definitionlet "f" be ($#m2_finseq_1 :::"FinSequence"::: ) "of" (Set ($#k1_numbers :::"REAL"::: ) ); let "r", "s" be ($#m1_subset_1 :::"Real":::); redefine pred "f" :::"lies_between"::: "r" "," "s" means :: GOBOARD4:def 2 (Bool "for" (Set (Var "n")) "being" ($#m2_subset_1 :::"Element"::: ) "of" (Set ($#k5_numbers :::"NAT"::: ) ) "st" (Bool (Bool (Set (Var "n")) ($#r2_hidden :::"in"::: ) (Set ($#k4_finseq_1 :::"dom"::: ) "f"))) "holds" (Bool "(" (Bool "r" ($#r1_xxreal_0 :::"<="::: ) (Set "f" ($#k1_seq_1 :::"."::: ) (Set (Var "n")))) & (Bool (Set "f" ($#k1_seq_1 :::"."::: ) (Set (Var "n"))) ($#r1_xxreal_0 :::"<="::: ) "s") ")" )); end; :: deftheorem defines :::"lies_between"::: GOBOARD4:def 2 : (Bool "for" (Set (Var "f")) "being" ($#m2_finseq_1 :::"FinSequence"::: ) "of" (Set ($#k1_numbers :::"REAL"::: ) ) (Bool "for" (Set (Var "r")) "," (Set (Var "s")) "being" ($#m1_subset_1 :::"Real":::) "holds" (Bool "(" (Bool (Set (Var "f")) ($#r1_goboard4 :::"lies_between"::: ) (Set (Var "r")) "," (Set (Var "s"))) "iff" (Bool "for" (Set (Var "n")) "being" ($#m2_subset_1 :::"Element"::: ) "of" (Set ($#k5_numbers :::"NAT"::: ) ) "st" (Bool (Bool (Set (Var "n")) ($#r2_hidden :::"in"::: ) (Set ($#k4_finseq_1 :::"dom"::: ) (Set (Var "f"))))) "holds" (Bool "(" (Bool (Set (Var "r")) ($#r1_xxreal_0 :::"<="::: ) (Set (Set (Var "f")) ($#k1_seq_1 :::"."::: ) (Set (Var "n")))) & (Bool (Set (Set (Var "f")) ($#k1_seq_1 :::"."::: ) (Set (Var "n"))) ($#r1_xxreal_0 :::"<="::: ) (Set (Var "s"))) ")" )) ")" ))); theorem :: GOBOARD4:4 (Bool "for" (Set (Var "f1")) "," (Set (Var "f2")) "being" ($#m2_finseq_1 :::"FinSequence":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")))) & (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")))) & (Bool (Set (Var "f1")) "is" ($#v1_topreal1 :::"special"::: ) ) & (Bool (Set (Var "f2")) "is" ($#v1_topreal1 :::"special"::: ) ) & (Bool "(" "for" (Set (Var "n")) "being" ($#m2_subset_1 :::"Element"::: ) "of" (Set ($#k5_numbers :::"NAT"::: ) ) "st" (Bool (Bool (Set (Var "n")) ($#r2_hidden :::"in"::: ) (Set ($#k4_finseq_1 :::"dom"::: ) (Set (Var "f1")))) & (Bool (Set (Set (Var "n")) ($#k2_nat_1 :::"+"::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k4_finseq_1 :::"dom"::: ) (Set (Var "f1"))))) "holds" (Bool (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Set (Var "n"))) ($#r1_hidden :::"<>"::: ) (Set (Set (Var "f1")) ($#k7_partfun1 :::"/."::: ) (Set "(" (Set (Var "n")) ($#k2_nat_1 :::"+"::: ) (Num 1) ")" ))) ")" ) & (Bool "(" "for" (Set (Var "n")) "being" ($#m2_subset_1 :::"Element"::: ) "of" (Set ($#k5_numbers :::"NAT"::: ) ) "st" (Bool (Bool (Set (Var "n")) ($#r2_hidden :::"in"::: ) (Set ($#k4_finseq_1 :::"dom"::: ) (Set (Var "f2")))) & (Bool (Set (Set (Var "n")) ($#k2_nat_1 :::"+"::: ) (Num 1)) ($#r2_hidden :::"in"::: ) (Set ($#k4_finseq_1 :::"dom"::: ) (Set (Var "f2"))))) "holds" (Bool (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Set (Var "n"))) ($#r1_hidden :::"<>"::: ) (Set (Set (Var "f2")) ($#k7_partfun1 :::"/."::: ) (Set "(" (Set (Var "n")) ($#k2_nat_1 :::"+"::: ) (Num 1) ")" ))) ")" ) & (Bool (Set ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" ))) & (Bool (Set ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f2"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" ))) & (Bool (Set ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f1"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" ))) & (Bool (Set ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" )))) "holds" (Bool (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f1"))) ($#r1_xboole_0 :::"meets"::: ) (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f2"))))) ; theorem :: GOBOARD4:5 (Bool "for" (Set (Var "f1")) "," (Set (Var "f2")) "being" ($#m2_finseq_1 :::"FinSequence":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Set (Var "f1")) "is" ($#v2_funct_1 :::"one-to-one"::: ) ) & (Bool (Set (Var "f1")) "is" ($#v1_topreal1 :::"special"::: ) ) & (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")))) & (Bool (Set (Var "f2")) "is" ($#v2_funct_1 :::"one-to-one"::: ) ) & (Bool (Set (Var "f2")) "is" ($#v1_topreal1 :::"special"::: ) ) & (Bool (Num 2) ($#r1_xxreal_0 :::"<="::: ) (Set ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")))) & (Bool (Set ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" ))) & (Bool (Set ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f2"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k1_goboard1 :::"X_axis"::: ) (Set (Var "f1")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f1")) ")" ))) & (Bool (Set ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f1"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" ))) & (Bool (Set ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2"))) ($#r1_goboard4 :::"lies_between"::: ) (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Num 1)) "," (Set (Set "(" ($#k2_goboard1 :::"Y_axis"::: ) (Set (Var "f2")) ")" ) ($#k1_seq_1 :::"."::: ) (Set "(" ($#k3_finseq_1 :::"len"::: ) (Set (Var "f2")) ")" )))) "holds" (Bool (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f1"))) ($#r1_xboole_0 :::"meets"::: ) (Set ($#k3_topreal1 :::"L~"::: ) (Set (Var "f2"))))) ; theorem :: GOBOARD4:6 (Bool "for" (Set (Var "P1")) "," (Set (Var "P2")) "being" ($#m1_subset_1 :::"Subset":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) (Bool "for" (Set (Var "p1")) "," (Set (Var "p2")) "," (Set (Var "q1")) "," (Set (Var "q2")) "being" ($#m1_subset_1 :::"Point":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Set (Var "P1")) ($#r1_topreal4 :::"is_S-P_arc_joining"::: ) (Set (Var "p1")) "," (Set (Var "q1"))) & (Bool (Set (Var "P2")) ($#r1_topreal4 :::"is_S-P_arc_joining"::: ) (Set (Var "p2")) "," (Set (Var "q2"))) & (Bool "(" "for" (Set (Var "p")) "being" ($#m1_subset_1 :::"Point":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Set (Var "p")) ($#r2_hidden :::"in"::: ) (Set (Set (Var "P1")) ($#k4_subset_1 :::"\/"::: ) (Set (Var "P2"))))) "holds" (Bool "(" (Bool (Set (Set (Var "p1")) ($#k17_euclid :::"`1"::: ) ) ($#r1_xxreal_0 :::"<="::: ) (Set (Set (Var "p")) ($#k17_euclid :::"`1"::: ) )) & (Bool (Set (Set (Var "p")) ($#k17_euclid :::"`1"::: ) ) ($#r1_xxreal_0 :::"<="::: ) (Set (Set (Var "q1")) ($#k17_euclid :::"`1"::: ) )) ")" ) ")" ) & (Bool "(" "for" (Set (Var "p")) "being" ($#m1_subset_1 :::"Point":::) "of" (Set "(" ($#k15_euclid :::"TOP-REAL"::: ) (Num 2) ")" ) "st" (Bool (Bool (Set (Var "p")) ($#r2_hidden :::"in"::: ) (Set (Set (Var "P1")) ($#k4_subset_1 :::"\/"::: ) (Set (Var "P2"))))) "holds" (Bool "(" (Bool (Set (Set (Var "p2")) ($#k18_euclid :::"`2"::: ) ) ($#r1_xxreal_0 :::"<="::: ) (Set (Set (Var "p")) ($#k18_euclid :::"`2"::: ) )) & (Bool (Set (Set (Var "p")) ($#k18_euclid :::"`2"::: ) ) ($#r1_xxreal_0 :::"<="::: ) (Set (Set (Var "q2")) ($#k18_euclid :::"`2"::: ) )) ")" ) ")" )) "holds" (Bool (Set (Var "P1")) ($#r1_xboole_0 :::"meets"::: ) (Set (Var "P2"))))) ;