980 by simp |
980 by simp |
981 |
981 |
982 theorem conj_le_cong: "(0 <= x \<Longrightarrow> P = P') \<Longrightarrow> (0 <= (x::int) \<and> P) = (0 <= x \<and> P')" |
982 theorem conj_le_cong: "(0 <= x \<Longrightarrow> P = P') \<Longrightarrow> (0 <= (x::int) \<and> P) = (0 <= x \<and> P')" |
983 by (simp cong: conj_cong) |
983 by (simp cong: conj_cong) |
984 |
984 |
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985 (* Theorems used in presburger.ML for the computation simpset*) |
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986 (* FIXME: They are present in Float.thy, so may be Float.thy should be lightened.*) |
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987 |
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988 lemma lift_bool: "x \<Longrightarrow> x=True" |
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989 by simp |
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990 |
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991 lemma nlift_bool: "~x \<Longrightarrow> x=False" |
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992 by simp |
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993 |
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994 lemma not_false_eq_true: "(~ False) = True" by simp |
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995 |
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996 lemma not_true_eq_false: "(~ True) = False" by simp |
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997 |
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998 |
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999 lemma int_eq_number_of_eq: "(((number_of v)::int)=(number_of w)) = iszero ((number_of (bin_add v (bin_minus w)))::int)" |
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1000 by simp |
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1001 lemma int_iszero_number_of_Pls: "iszero (Numeral0::int)" |
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1002 by (simp only: iszero_number_of_Pls) |
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1003 |
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1004 lemma int_nonzero_number_of_Min: "~(iszero ((-1)::int))" |
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1005 by simp |
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1006 |
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1007 lemma int_iszero_number_of_0: "iszero ((number_of (w BIT bit.B0))::int) = iszero ((number_of w)::int)" |
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1008 by simp |
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1009 |
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1010 lemma int_iszero_number_of_1: "\<not> iszero ((number_of (w BIT bit.B1))::int)" |
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1011 by simp |
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1012 |
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1013 lemma int_less_number_of_eq_neg: "(((number_of x)::int) < number_of y) = neg ((number_of (bin_add x (bin_minus y)))::int)" |
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1014 by simp |
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1015 |
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1016 lemma int_not_neg_number_of_Pls: "\<not> (neg (Numeral0::int))" |
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1017 by simp |
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1018 |
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1019 lemma int_neg_number_of_Min: "neg (-1::int)" |
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1020 by simp |
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1021 |
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1022 lemma int_neg_number_of_BIT: "neg ((number_of (w BIT x))::int) = neg ((number_of w)::int)" |
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1023 by simp |
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1024 |
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1025 lemma int_le_number_of_eq: "(((number_of x)::int) \<le> number_of y) = (\<not> neg ((number_of (bin_add y (bin_minus x)))::int))" |
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1026 by simp |
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1027 lemma int_number_of_add_sym: "((number_of v)::int) + number_of w = number_of (bin_add v w)" |
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1028 by simp |
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1029 |
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1030 lemma int_number_of_diff_sym: "((number_of v)::int) - number_of w = number_of (bin_add v (bin_minus w))" |
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1031 by simp |
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1032 |
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1033 lemma int_number_of_mult_sym: "((number_of v)::int) * number_of w = number_of (bin_mult v w)" |
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1034 by simp |
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1035 |
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1036 lemma int_number_of_minus_sym: "- ((number_of v)::int) = number_of (bin_minus v)" |
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1037 by simp |
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1038 lemma add_left_zero: "0 + a = (a::'a::comm_monoid_add)" |
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1039 by simp |
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1040 |
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1041 lemma add_right_zero: "a + 0 = (a::'a::comm_monoid_add)" |
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1042 by simp |
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1043 |
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1044 lemma mult_left_one: "1 * a = (a::'a::semiring_1)" |
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1045 by simp |
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1046 |
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1047 lemma mult_right_one: "a * 1 = (a::'a::semiring_1)" |
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1048 by simp |
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1049 |
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1050 lemma int_pow_0: "(a::int)^(Numeral0) = 1" |
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1051 by simp |
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1052 |
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1053 lemma int_pow_1: "(a::int)^(Numeral1) = a" |
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1054 by simp |
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1055 |
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1056 lemma zero_eq_Numeral0_nring: "(0::'a::number_ring) = Numeral0" |
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1057 by simp |
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1058 |
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1059 lemma one_eq_Numeral1_nring: "(1::'a::number_ring) = Numeral1" |
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1060 by simp |
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1061 |
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1062 lemma zero_eq_Numeral0_nat: "(0::nat) = Numeral0" |
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1063 by simp |
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1064 |
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1065 lemma one_eq_Numeral1_nat: "(1::nat) = Numeral1" |
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1066 by simp |
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1067 |
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1068 lemma zpower_Pls: "(z::int)^Numeral0 = Numeral1" |
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1069 by simp |
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1070 |
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1071 lemma zpower_Min: "(z::int)^((-1)::nat) = Numeral1" |
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1072 proof - |
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1073 have 1:"((-1)::nat) = 0" |
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1074 by simp |
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1075 show ?thesis by (simp add: 1) |
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1076 qed |
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1077 |
985 use "cooper_dec.ML" |
1078 use "cooper_dec.ML" |
986 use "reflected_presburger.ML" |
1079 use "reflected_presburger.ML" |
987 use "reflected_cooper.ML" |
1080 use "reflected_cooper.ML" |
988 oracle |
1081 oracle |
989 presburger_oracle ("term") = ReflectedCooper.presburger_oracle |
1082 presburger_oracle ("term") = ReflectedCooper.presburger_oracle |