equal
deleted
inserted
replaced
158 |
158 |
159 |
159 |
160 subsection "Complexity" |
160 subsection "Complexity" |
161 |
161 |
162 text \<open>Auxiliary time functions (which are both 0):\<close> |
162 text \<open>Auxiliary time functions (which are both 0):\<close> |
163 define_time_fun mht |
163 time_fun mht |
164 define_time_fun node |
164 time_fun node |
165 |
165 |
166 lemma T_mht_0[simp]: "T_mht t = 0" |
166 lemma T_mht_0[simp]: "T_mht t = 0" |
167 by(cases t)auto |
167 by(cases t)auto |
168 |
168 |
169 text \<open>Define timing function\<close> |
169 text \<open>Define timing function\<close> |
170 define_time_fun merge |
170 time_fun merge |
171 define_time_fun insert |
171 time_fun insert |
172 define_time_fun del_min |
172 time_fun del_min |
173 |
173 |
174 lemma T_merge_min_height: "ltree l \<Longrightarrow> ltree r \<Longrightarrow> T_merge l r \<le> min_height l + min_height r + 1" |
174 lemma T_merge_min_height: "ltree l \<Longrightarrow> ltree r \<Longrightarrow> T_merge l r \<le> min_height l + min_height r + 1" |
175 proof(induction l r rule: merge.induct) |
175 proof(induction l r rule: merge.induct) |
176 case 3 thus ?case by(auto) |
176 case 3 thus ?case by(auto) |
177 qed simp_all |
177 qed simp_all |